./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 910d8e768520d514eafd11bd6e0d202501f1eee040b6e70d07e33c173cc4a1ca --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:46:32,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:46:32,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:46:32,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:46:32,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:46:32,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:46:32,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:46:32,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:46:32,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:46:32,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:46:32,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:46:32,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:46:32,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:46:32,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:46:32,242 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:46:32,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:46:32,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:46:32,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:46:32,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:46:32,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:46:32,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:46:32,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:46:32,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:46:32,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:46:32,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:46:32,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:46:32,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:46:32,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:46:32,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:46:32,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:46:32,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:46:32,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:46:32,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:46:32,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:46:32,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:46:32,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:46:32,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:46:32,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:46:32,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:46:32,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:46:32,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:46:32,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:46:32,250 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 910d8e768520d514eafd11bd6e0d202501f1eee040b6e70d07e33c173cc4a1ca [2024-10-10 21:46:32,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:46:32,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:46:32,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:46:32,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:46:32,553 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:46:32,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2024-10-10 21:46:34,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:46:34,195 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:46:34,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2024-10-10 21:46:34,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/905ba1361/aa1f2cbbba8348dc96d41d86df617274/FLAG096495fbf [2024-10-10 21:46:34,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/905ba1361/aa1f2cbbba8348dc96d41d86df617274 [2024-10-10 21:46:34,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:46:34,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:46:34,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:46:34,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:46:34,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:46:34,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eb7b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34, skipping insertion in model container [2024-10-10 21:46:34,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:46:34,438 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i[816,829] [2024-10-10 21:46:34,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:46:34,465 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:46:34,478 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i[816,829] [2024-10-10 21:46:34,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:46:34,503 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:46:34,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34 WrapperNode [2024-10-10 21:46:34,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:46:34,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:46:34,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:46:34,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:46:34,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,536 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-10-10 21:46:34,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:46:34,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:46:34,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:46:34,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:46:34,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,564 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 2, 2, 3]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-10-10 21:46:34,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:46:34,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:46:34,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:46:34,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:46:34,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (1/1) ... [2024-10-10 21:46:34,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:46:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:34,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:46:34,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:46:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:46:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:46:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:46:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 21:46:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-10 21:46:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:46:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:46:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:46:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:46:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-10 21:46:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:46:34,761 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:46:34,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:46:34,936 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-10 21:46:34,938 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:46:34,981 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:46:34,983 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-10 21:46:34,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:46:34 BoogieIcfgContainer [2024-10-10 21:46:34,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:46:34,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:46:34,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:46:34,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:46:34,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:46:34" (1/3) ... [2024-10-10 21:46:34,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeb6dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:46:34, skipping insertion in model container [2024-10-10 21:46:34,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:34" (2/3) ... [2024-10-10 21:46:34,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeb6dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:46:34, skipping insertion in model container [2024-10-10 21:46:34,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:46:34" (3/3) ... [2024-10-10 21:46:34,994 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2024-10-10 21:46:35,010 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:46:35,011 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:46:35,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:46:35,080 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;@1ff00c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:46:35,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:46:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:46:35,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:35,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:35,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:35,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash 128561044, now seen corresponding path program 1 times [2024-10-10 21:46:35,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:35,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550153949] [2024-10-10 21:46:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:46:35,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:35,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550153949] [2024-10-10 21:46:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550153949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:46:35,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:46:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:46:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384561375] [2024-10-10 21:46:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:46:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:46:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:46:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:46:35,422 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:35,473 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2024-10-10 21:46:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:46:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 21:46:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:35,485 INFO L225 Difference]: With dead ends: 27 [2024-10-10 21:46:35,485 INFO L226 Difference]: Without dead ends: 13 [2024-10-10 21:46:35,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:46:35,493 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:35,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-10 21:46:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-10 21:46:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-10 21:46:35,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2024-10-10 21:46:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:35,529 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-10 21:46:35,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-10 21:46:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-10 21:46:35,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:35,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:35,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:46:35,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:35,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash -162311142, now seen corresponding path program 1 times [2024-10-10 21:46:35,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:35,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834772478] [2024-10-10 21:46:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:46:35,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:35,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834772478] [2024-10-10 21:46:35,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834772478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:35,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482086034] [2024-10-10 21:46:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:35,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:35,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:35,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:35,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:46:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:35,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:46:35,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:35,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:46:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482086034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:46:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:46:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:46:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730710194] [2024-10-10 21:46:35,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:46:35,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:46:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:46:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:46:35,791 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:35,812 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2024-10-10 21:46:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:46:35,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-10 21:46:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:35,813 INFO L225 Difference]: With dead ends: 23 [2024-10-10 21:46:35,813 INFO L226 Difference]: Without dead ends: 15 [2024-10-10 21:46:35,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:46:35,815 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:35,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-10 21:46:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-10 21:46:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-10 21:46:35,819 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2024-10-10 21:46:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:35,820 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-10 21:46:35,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-10 21:46:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 21:46:35,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:35,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:35,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:46:36,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:36,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:36,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1034537550, now seen corresponding path program 1 times [2024-10-10 21:46:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410853507] [2024-10-10 21:46:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:36,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:46:36,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410853507] [2024-10-10 21:46:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410853507] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880114726] [2024-10-10 21:46:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:36,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:36,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:46:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:36,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:46:36,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:46:36,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:46:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880114726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:36,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:46:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16261350] [2024-10-10 21:46:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:36,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:46:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:46:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:46:36,294 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:36,326 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2024-10-10 21:46:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:46:36,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 21:46:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:36,327 INFO L225 Difference]: With dead ends: 30 [2024-10-10 21:46:36,327 INFO L226 Difference]: Without dead ends: 18 [2024-10-10 21:46:36,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:46:36,328 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:36,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-10 21:46:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-10 21:46:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-10-10 21:46:36,335 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2024-10-10 21:46:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:36,337 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-10-10 21:46:36,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-10-10 21:46:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-10 21:46:36,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:36,338 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:36,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 21:46:36,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:36,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:36,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1071071032, now seen corresponding path program 2 times [2024-10-10 21:46:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395893259] [2024-10-10 21:46:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-10 21:46:36,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:36,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395893259] [2024-10-10 21:46:36,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395893259] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:36,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583761631] [2024-10-10 21:46:36,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:46:36,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:36,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:36,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:46:36,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:46:36,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:36,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:46:36,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:46:36,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:46:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583761631] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:36,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:36,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-10-10 21:46:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021883449] [2024-10-10 21:46:36,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:36,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:46:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:46:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:46:36,900 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:36,948 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2024-10-10 21:46:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:46:36,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-10 21:46:36,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:36,950 INFO L225 Difference]: With dead ends: 38 [2024-10-10 21:46:36,950 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 21:46:36,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:46:36,951 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:36,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 21:46:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-10 21:46:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-10-10 21:46:36,956 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2024-10-10 21:46:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:36,957 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-10-10 21:46:36,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-10-10 21:46:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-10 21:46:36,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:36,958 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:36,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:46:37,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:37,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:37,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 436827028, now seen corresponding path program 3 times [2024-10-10 21:46:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:37,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930514886] [2024-10-10 21:46:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:37,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 21:46:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930514886] [2024-10-10 21:46:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930514886] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636294395] [2024-10-10 21:46:37,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:46:37,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:37,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:37,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:46:37,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 21:46:37,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:37,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:46:37,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-10 21:46:37,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-10 21:46:37,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636294395] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:37,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:37,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-10-10 21:46:37,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470178925] [2024-10-10 21:46:37,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:37,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 21:46:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 21:46:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:46:37,690 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:37,771 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-10-10 21:46:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-10 21:46:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-10 21:46:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:37,772 INFO L225 Difference]: With dead ends: 49 [2024-10-10 21:46:37,772 INFO L226 Difference]: Without dead ends: 35 [2024-10-10 21:46:37,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:46:37,774 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:37,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:46:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-10 21:46:37,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-10-10 21:46:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-10-10 21:46:37,780 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2024-10-10 21:46:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:37,780 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-10-10 21:46:37,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-10-10 21:46:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-10 21:46:37,781 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:37,781 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:37,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:46:37,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:37,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1098944486, now seen corresponding path program 4 times [2024-10-10 21:46:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169396438] [2024-10-10 21:46:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:37,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 21:46:38,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169396438] [2024-10-10 21:46:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169396438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656362569] [2024-10-10 21:46:38,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:46:38,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:38,247 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:38,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:46:38,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:46:38,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:38,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 21:46:38,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 21:46:38,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 21:46:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656362569] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:38,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-10-10 21:46:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839833073] [2024-10-10 21:46:38,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:38,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-10 21:46:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-10 21:46:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:46:38,682 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:38,728 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-10-10 21:46:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-10 21:46:38,728 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-10 21:46:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:38,729 INFO L225 Difference]: With dead ends: 70 [2024-10-10 21:46:38,729 INFO L226 Difference]: Without dead ends: 48 [2024-10-10 21:46:38,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:46:38,731 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:38,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-10 21:46:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-10 21:46:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-10-10 21:46:38,743 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 33 [2024-10-10 21:46:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:38,744 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-10-10 21:46:38,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-10-10 21:46:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-10 21:46:38,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:38,746 INFO L215 NwaCegarLoop]: trace histogram [24, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:38,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:46:38,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:38,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:38,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 162670932, now seen corresponding path program 5 times [2024-10-10 21:46:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:38,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421127263] [2024-10-10 21:46:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:38,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 21:46:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421127263] [2024-10-10 21:46:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421127263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197646159] [2024-10-10 21:46:39,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:46:39,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:39,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:39,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:47:29,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-10-10 21:47:29,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:47:29,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:47:29,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-10-10 21:47:29,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:47:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-10-10 21:47:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197646159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:47:29,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:47:29,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 9] total 41 [2024-10-10 21:47:29,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878544197] [2024-10-10 21:47:29,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:47:29,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-10 21:47:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:47:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-10 21:47:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2024-10-10 21:47:29,685 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:47:29,817 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-10-10 21:47:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-10 21:47:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-10 21:47:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:47:29,819 INFO L225 Difference]: With dead ends: 87 [2024-10-10 21:47:29,819 INFO L226 Difference]: Without dead ends: 65 [2024-10-10 21:47:29,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2024-10-10 21:47:29,821 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:47:29,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:47:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-10 21:47:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-10 21:47:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2024-10-10 21:47:29,831 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 46 [2024-10-10 21:47:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:47:29,832 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2024-10-10 21:47:29,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2024-10-10 21:47:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-10 21:47:29,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:47:29,833 INFO L215 NwaCegarLoop]: trace histogram [25, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:47:29,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:47:30,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 21:47:30,035 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:47:30,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:47:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2069334054, now seen corresponding path program 6 times [2024-10-10 21:47:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:47:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659644571] [2024-10-10 21:47:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:47:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:47:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-10 21:47:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659644571] [2024-10-10 21:47:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659644571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395449626] [2024-10-10 21:47:30,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:47:30,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:30,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:47:37,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-10-10 21:47:37,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:47:37,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:47:37,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-10-10 21:47:37,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:47:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-10-10 21:47:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395449626] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:47:38,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:47:38,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17, 17] total 58 [2024-10-10 21:47:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687295608] [2024-10-10 21:47:38,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:47:38,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-10 21:47:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:47:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-10 21:47:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=2433, Unknown=0, NotChecked=0, Total=3306 [2024-10-10 21:47:38,223 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 58 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:47:38,429 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2024-10-10 21:47:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-10 21:47:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-10 21:47:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:47:38,431 INFO L225 Difference]: With dead ends: 136 [2024-10-10 21:47:38,433 INFO L226 Difference]: Without dead ends: 98 [2024-10-10 21:47:38,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=873, Invalid=2433, Unknown=0, NotChecked=0, Total=3306 [2024-10-10 21:47:38,435 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:47:38,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:47:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-10 21:47:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-10-10 21:47:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2024-10-10 21:47:38,450 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 63 [2024-10-10 21:47:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:47:38,452 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2024-10-10 21:47:38,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2024-10-10 21:47:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-10 21:47:38,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:47:38,458 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:47:38,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:47:38,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:38,659 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:47:38,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:47:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1939727084, now seen corresponding path program 7 times [2024-10-10 21:47:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:47:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438862705] [2024-10-10 21:47:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:47:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:47:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:39,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:39,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438862705] [2024-10-10 21:47:39,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438862705] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:39,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224235544] [2024-10-10 21:47:39,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:47:39,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:39,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:39,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:39,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:47:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:39,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-10 21:47:39,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:39,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:47:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:40,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224235544] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:47:40,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:47:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2024-10-10 21:47:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512416115] [2024-10-10 21:47:40,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:47:40,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-10 21:47:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:47:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-10 21:47:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-10-10 21:47:40,846 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 57 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:47:40,921 INFO L93 Difference]: Finished difference Result 196 states and 229 transitions. [2024-10-10 21:47:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-10 21:47:40,924 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-10-10 21:47:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:47:40,925 INFO L225 Difference]: With dead ends: 196 [2024-10-10 21:47:40,925 INFO L226 Difference]: Without dead ends: 126 [2024-10-10 21:47:40,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-10-10 21:47:40,927 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:47:40,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:47:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-10 21:47:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-10-10 21:47:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2024-10-10 21:47:40,947 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 96 [2024-10-10 21:47:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:47:40,948 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2024-10-10 21:47:40,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2024-10-10 21:47:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-10 21:47:40,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:47:40,952 INFO L215 NwaCegarLoop]: trace histogram [54, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:47:40,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:47:41,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:41,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:47:41,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:47:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2067732372, now seen corresponding path program 8 times [2024-10-10 21:47:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:47:41,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145293854] [2024-10-10 21:47:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:47:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:47:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:43,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145293854] [2024-10-10 21:47:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145293854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569873302] [2024-10-10 21:47:43,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:47:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:43,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:43,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:47:43,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:47:43,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:47:43,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-10 21:47:43,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:44,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:47:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:47,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569873302] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:47:47,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:47:47,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2024-10-10 21:47:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818927640] [2024-10-10 21:47:47,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:47:47,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-10-10 21:47:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:47:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-10-10 21:47:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-10-10 21:47:47,100 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 113 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:47:47,227 INFO L93 Difference]: Finished difference Result 252 states and 313 transitions. [2024-10-10 21:47:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-10-10 21:47:47,228 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-10 21:47:47,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:47:47,229 INFO L225 Difference]: With dead ends: 252 [2024-10-10 21:47:47,229 INFO L226 Difference]: Without dead ends: 182 [2024-10-10 21:47:47,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-10-10 21:47:47,233 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:47:47,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:47:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-10 21:47:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-10-10 21:47:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.022099447513812) internal successors, (185), 181 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2024-10-10 21:47:47,247 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 124 [2024-10-10 21:47:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:47:47,247 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2024-10-10 21:47:47,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2024-10-10 21:47:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 21:47:47,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:47:47,250 INFO L215 NwaCegarLoop]: trace histogram [110, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:47:47,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:47:47,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:47,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:47:47,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:47:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2061421716, now seen corresponding path program 9 times [2024-10-10 21:47:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:47:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450706036] [2024-10-10 21:47:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:47:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:47:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7035 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-10-10 21:47:54,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450706036] [2024-10-10 21:47:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450706036] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754860203] [2024-10-10 21:47:54,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:47:54,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:54,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:54,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:54,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process