./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:28:07,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:28:07,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:28:07,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:28:07,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:28:07,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:28:07,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:28:07,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:28:07,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:28:07,509 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:28:07,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:28:07,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:28:07,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:28:07,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:28:07,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:28:07,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:28:07,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:28:07,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:28:07,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:28:07,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:28:07,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:28:07,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:28:07,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:28:07,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:28:07,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:28:07,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:28:07,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:28:07,518 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:28:07,518 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:28:07,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:28:07,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:28:07,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:28:07,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:28:07,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:28:07,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:28:07,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:28:07,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:28:07,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:28:07,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:28:07,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:28:07,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:28:07,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:28:07,525 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 [2024-11-16 02:28:07,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:28:07,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:28:07,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:28:07,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:28:07,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:28:07,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-16 02:28:09,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:28:09,331 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:28:09,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-16 02:28:09,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1110479c/94a7b40277644917b36f53bc2dfcbdc2/FLAG1584f6bc4 [2024-11-16 02:28:09,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1110479c/94a7b40277644917b36f53bc2dfcbdc2 [2024-11-16 02:28:09,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:28:09,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:28:09,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:28:09,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:28:09,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:28:09,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46599513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09, skipping insertion in model container [2024-11-16 02:28:09,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:28:09,537 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-16 02:28:09,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:28:09,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:28:09,577 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-16 02:28:09,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:28:09,600 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:28:09,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09 WrapperNode [2024-11-16 02:28:09,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:28:09,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:28:09,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:28:09,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:28:09,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,630 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-16 02:28:09,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:28:09,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:28:09,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:28:09,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:28:09,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,655 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 3, 1]. [2024-11-16 02:28:09,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:28:09,667 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:28:09,667 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:28:09,667 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:28:09,668 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (1/1) ... [2024-11-16 02:28:09,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:28:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:09,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:28:09,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:28:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:28:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:28:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:28:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:28:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:28:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:28:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:28:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:28:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:28:09,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:28:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:28:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:28:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:28:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:28:09,851 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:28:09,853 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:28:10,061 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-16 02:28:10,074 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-16 02:28:10,074 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:28:10,086 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:28:10,086 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:28:10,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:28:10 BoogieIcfgContainer [2024-11-16 02:28:10,087 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:28:10,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:28:10,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:28:10,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:28:10,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:28:09" (1/3) ... [2024-11-16 02:28:10,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c75968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:28:10, skipping insertion in model container [2024-11-16 02:28:10,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:28:09" (2/3) ... [2024-11-16 02:28:10,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c75968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:28:10, skipping insertion in model container [2024-11-16 02:28:10,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:28:10" (3/3) ... [2024-11-16 02:28:10,097 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2024-11-16 02:28:10,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:28:10,111 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:28:10,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:28:10,155 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;@68e0832e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:28:10,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:28:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 02:28:10,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:10,164 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:10,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:10,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -202091506, now seen corresponding path program 1 times [2024-11-16 02:28:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:10,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008992544] [2024-11-16 02:28:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:28:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008992544] [2024-11-16 02:28:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008992544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:28:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:28:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:28:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844089023] [2024-11-16 02:28:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:28:10,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:28:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:28:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:28:10,348 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) 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) [2024-11-16 02:28:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:10,357 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-11-16 02:28:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:28:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) 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 [2024-11-16 02:28:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:10,365 INFO L225 Difference]: With dead ends: 38 [2024-11-16 02:28:10,365 INFO L226 Difference]: Without dead ends: 19 [2024-11-16 02:28:10,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:28:10,369 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:10,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:28:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-16 02:28:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-16 02:28:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-16 02:28:10,394 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2024-11-16 02:28:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:10,394 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-16 02:28:10,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) 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) [2024-11-16 02:28:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-16 02:28:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 02:28:10,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:10,395 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:10,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:28:10,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:10,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1892286897, now seen corresponding path program 1 times [2024-11-16 02:28:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:10,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001595110] [2024-11-16 02:28:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:10,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:28:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001595110] [2024-11-16 02:28:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001595110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:28:10,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:28:10,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:28:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464533892] [2024-11-16 02:28:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:28:10,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:28:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:28:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:28:10,513 INFO L87 Difference]: Start difference. First operand 19 states and 24 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) [2024-11-16 02:28:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:10,572 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-16 02:28:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:28:10,575 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 [2024-11-16 02:28:10,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:10,576 INFO L225 Difference]: With dead ends: 40 [2024-11-16 02:28:10,577 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:28:10,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:28:10,578 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:10,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:28:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:28:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-11-16 02:28:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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) [2024-11-16 02:28:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-16 02:28:10,586 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 11 [2024-11-16 02:28:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:10,586 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-16 02:28:10,586 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) [2024-11-16 02:28:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-16 02:28:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:28:10,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:10,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:10,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:28:10,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:10,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 939919917, now seen corresponding path program 1 times [2024-11-16 02:28:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100856971] [2024-11-16 02:28:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:28:10,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:10,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100856971] [2024-11-16 02:28:10,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100856971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:28:10,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:28:10,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:28:10,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914435791] [2024-11-16 02:28:10,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:28:10,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:28:10,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:10,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:28:10,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:28:10,786 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:10,850 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-16 02:28:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:28:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:28:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:10,852 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:28:10,852 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:28:10,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:28:10,853 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:10,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:28:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:28:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-16 02:28:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 02:28:10,858 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2024-11-16 02:28:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:10,859 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 02:28:10,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 02:28:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:28:10,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:10,860 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:10,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:28:10,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:10,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2001737682, now seen corresponding path program 1 times [2024-11-16 02:28:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764156969] [2024-11-16 02:28:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:28:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:10,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764156969] [2024-11-16 02:28:10,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764156969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:10,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245778900] [2024-11-16 02:28:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:10,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:10,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:10,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:10,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:28:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:11,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:28:11,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:28:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:28:11,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:28:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 02:28:11,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245778900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:28:11,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:28:11,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:28:11,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985956518] [2024-11-16 02:28:11,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:28:11,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:28:11,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:28:11,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:28:11,126 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:11,202 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2024-11-16 02:28:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:28:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 21 [2024-11-16 02:28:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:11,203 INFO L225 Difference]: With dead ends: 77 [2024-11-16 02:28:11,203 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 02:28:11,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:28:11,205 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:11,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 43 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:28:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 02:28:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2024-11-16 02:28:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-11-16 02:28:11,215 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 21 [2024-11-16 02:28:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:11,216 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-11-16 02:28:11,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-11-16 02:28:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 02:28:11,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:11,218 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:11,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:28:11,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:11,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:11,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -991030919, now seen corresponding path program 2 times [2024-11-16 02:28:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74972537] [2024-11-16 02:28:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:28:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74972537] [2024-11-16 02:28:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74972537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313710963] [2024-11-16 02:28:11,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:28:11,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:11,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:11,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:11,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:28:11,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:28:11,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:28:11,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:28:11,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:28:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:28:11,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:28:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:28:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313710963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:28:11,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:28:11,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:28:11,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650434348] [2024-11-16 02:28:11,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:28:11,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:28:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:11,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:28:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:28:11,928 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:12,062 INFO L93 Difference]: Finished difference Result 159 states and 205 transitions. [2024-11-16 02:28:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:28:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 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 43 [2024-11-16 02:28:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:12,065 INFO L225 Difference]: With dead ends: 159 [2024-11-16 02:28:12,065 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 02:28:12,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:28:12,066 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 242 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:12,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 76 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:28:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 02:28:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 123. [2024-11-16 02:28:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 122 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2024-11-16 02:28:12,083 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 43 [2024-11-16 02:28:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:12,083 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2024-11-16 02:28:12,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2024-11-16 02:28:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-16 02:28:12,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:12,086 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:12,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:28:12,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:12,287 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:12,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -988762075, now seen corresponding path program 3 times [2024-11-16 02:28:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:12,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91508620] [2024-11-16 02:28:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 02:28:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91508620] [2024-11-16 02:28:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91508620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397715086] [2024-11-16 02:28:12,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:28:12,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:12,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:12,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:28:12,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:28:12,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:28:12,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:28:12,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:28:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-16 02:28:12,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:28:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-16 02:28:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397715086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:28:12,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:28:12,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-11-16 02:28:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225090629] [2024-11-16 02:28:12,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:28:12,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:28:12,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:28:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:28:12,760 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 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) [2024-11-16 02:28:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:13,006 INFO L93 Difference]: Finished difference Result 271 states and 347 transitions. [2024-11-16 02:28:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:28:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 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) Word has length 91 [2024-11-16 02:28:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:13,008 INFO L225 Difference]: With dead ends: 271 [2024-11-16 02:28:13,011 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 02:28:13,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:28:13,012 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 204 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:13,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 122 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:28:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 02:28:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2024-11-16 02:28:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.2317596566523605) internal successors, (287), 233 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2024-11-16 02:28:13,033 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 91 [2024-11-16 02:28:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:13,035 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2024-11-16 02:28:13,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 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) [2024-11-16 02:28:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2024-11-16 02:28:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 02:28:13,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:13,040 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:13,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:28:13,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:13,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:13,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1273353726, now seen corresponding path program 4 times [2024-11-16 02:28:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700661746] [2024-11-16 02:28:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-16 02:28:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700661746] [2024-11-16 02:28:13,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700661746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449828109] [2024-11-16 02:28:13,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:28:13,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:13,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:13,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:13,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:28:13,820 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:28:13,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:28:13,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 02:28:13,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:28:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-16 02:28:13,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:28:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-16 02:28:14,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449828109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:28:14,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:28:14,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-16 02:28:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675897345] [2024-11-16 02:28:14,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:28:14,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 02:28:14,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 02:28:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:28:14,436 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:14,896 INFO L93 Difference]: Finished difference Result 557 states and 705 transitions. [2024-11-16 02:28:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:28:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 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 181 [2024-11-16 02:28:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:14,899 INFO L225 Difference]: With dead ends: 557 [2024-11-16 02:28:14,899 INFO L226 Difference]: Without dead ends: 480 [2024-11-16 02:28:14,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:28:14,900 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 687 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:14,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 189 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:28:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-16 02:28:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 409. [2024-11-16 02:28:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.2720588235294117) internal successors, (519), 408 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 519 transitions. [2024-11-16 02:28:14,912 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 519 transitions. Word has length 181 [2024-11-16 02:28:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:14,913 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 519 transitions. [2024-11-16 02:28:14,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 519 transitions. [2024-11-16 02:28:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-16 02:28:14,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:14,916 INFO L215 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:14,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:28:15,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:15,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:15,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 237547449, now seen corresponding path program 5 times [2024-11-16 02:28:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:15,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985762681] [2024-11-16 02:28:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:15,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2024-11-16 02:28:16,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985762681] [2024-11-16 02:28:16,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985762681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967600407] [2024-11-16 02:28:16,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:28:16,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:16,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:16,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:28:26,954 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-16 02:28:26,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:28:26,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 02:28:26,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:28:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2024-11-16 02:28:27,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:28:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2024-11-16 02:28:27,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967600407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:28:27,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:28:27,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 21, 21] total 59 [2024-11-16 02:28:27,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362614879] [2024-11-16 02:28:27,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:28:27,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-16 02:28:27,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:28:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-16 02:28:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:28:27,796 INFO L87 Difference]: Start difference. First operand 409 states and 519 transitions. Second operand has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:28:28,671 INFO L93 Difference]: Finished difference Result 830 states and 1062 transitions. [2024-11-16 02:28:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-16 02:28:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 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 299 [2024-11-16 02:28:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:28:28,680 INFO L225 Difference]: With dead ends: 830 [2024-11-16 02:28:28,685 INFO L226 Difference]: Without dead ends: 749 [2024-11-16 02:28:28,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:28:28,688 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1534 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:28:28,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 254 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:28:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-16 02:28:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 741. [2024-11-16 02:28:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.231081081081081) internal successors, (911), 740 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 911 transitions. [2024-11-16 02:28:28,733 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 911 transitions. Word has length 299 [2024-11-16 02:28:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:28:28,734 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 911 transitions. [2024-11-16 02:28:28,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:28:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 911 transitions. [2024-11-16 02:28:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-16 02:28:28,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:28:28,755 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:28:28,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:28:28,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:28,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:28:28,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:28:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1153908727, now seen corresponding path program 6 times [2024-11-16 02:28:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:28:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269154126] [2024-11-16 02:28:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:28:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:28:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:28:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15680 backedges. 0 proven. 9352 refuted. 0 times theorem prover too weak. 6328 trivial. 0 not checked. [2024-11-16 02:28:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:28:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269154126] [2024-11-16 02:28:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269154126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:28:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879625943] [2024-11-16 02:28:31,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:28:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:28:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:28:31,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:28:31,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process