./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c --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-cav19/array_min_and_copy_shift_sum_add.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:49:04,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:49:04,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:49:04,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:49:04,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:49:04,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:49:04,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:49:04,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:49:04,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:49:04,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:49:04,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:49:04,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:49:04,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:49:04,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:49:04,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:49:04,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:49:04,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:49:04,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:49:04,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:49:04,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:49:04,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:49:04,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:49:04,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:49:04,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:49:04,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:49:04,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:49:04,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:49:04,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:49:04,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:49:04,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:49:04,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:49:04,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:49:04,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:49:04,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:49:04,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:49:04,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:49:04,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:49:04,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:49:04,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:49:04,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:49:04,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:49:04,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:49:04,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c [2024-11-16 02:49:04,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:49:04,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:49:04,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:49:04,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:49:04,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:49:04,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-16 02:49:06,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:49:06,339 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:49:06,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-16 02:49:06,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc3c75d9/9dc3fb2db7234b80a6bf1a86d1e25b8e/FLAG39460c069 [2024-11-16 02:49:06,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc3c75d9/9dc3fb2db7234b80a6bf1a86d1e25b8e [2024-11-16 02:49:06,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:49:06,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:49:06,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:49:06,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:49:06,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:49:06,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:06,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4430e679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06, skipping insertion in model container [2024-11-16 02:49:06,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:06,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:49:06,912 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-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-16 02:49:06,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:49:06,930 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:49:06,949 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-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-16 02:49:06,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:49:06,965 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:49:06,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06 WrapperNode [2024-11-16 02:49:06,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:49:06,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:49:06,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:49:06,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:49:06,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:06,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:06,992 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-16 02:49:06,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:49:06,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:49:06,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:49:06,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:49:06,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,015 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 1 writes are split as follows [0, 0, 1]. [2024-11-16 02:49:07,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,026 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:49:07,030 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:49:07,031 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:49:07,031 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:49:07,031 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (1/1) ... [2024-11-16 02:49:07,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:49:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:07,062 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 02:49:07,071 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 02:49:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:49:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 02:49:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:49:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:49:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:49:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:49:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:49:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:49:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:49:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:49:07,175 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:49:07,176 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:49:07,294 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 02:49:07,304 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-16 02:49:07,304 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:49:07,314 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:49:07,314 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:49:07,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:49:07 BoogieIcfgContainer [2024-11-16 02:49:07,315 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:49:07,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:49:07,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:49:07,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:49:07,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:49:06" (1/3) ... [2024-11-16 02:49:07,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8a785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:49:07, skipping insertion in model container [2024-11-16 02:49:07,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:49:06" (2/3) ... [2024-11-16 02:49:07,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8a785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:49:07, skipping insertion in model container [2024-11-16 02:49:07,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:49:07" (3/3) ... [2024-11-16 02:49:07,323 INFO L112 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2024-11-16 02:49:07,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:49:07,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:49:07,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:49:07,383 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;@25194096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:49:07,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:49:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:49:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 02:49:07,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:07,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:07,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:07,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 831257206, now seen corresponding path program 1 times [2024-11-16 02:49:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375631288] [2024-11-16 02:49:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:49:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375631288] [2024-11-16 02:49:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375631288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:49:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:49:07,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:49:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121537935] [2024-11-16 02:49:07,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:49:07,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:49:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:49:07,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:49:07,590 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:49:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:07,602 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-11-16 02:49:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:49:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-16 02:49:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:07,608 INFO L225 Difference]: With dead ends: 62 [2024-11-16 02:49:07,608 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:49:07,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 02:49:07,612 INFO L432 NwaCegarLoop]: 38 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, 38 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 02:49:07,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:49:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:49:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 02:49:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:49:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-16 02:49:07,638 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2024-11-16 02:49:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:07,638 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-16 02:49:07,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:49:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-16 02:49:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:49:07,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:07,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:07,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:49:07,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:07,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash -56047361, now seen corresponding path program 1 times [2024-11-16 02:49:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:07,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662545639] [2024-11-16 02:49:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:49:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662545639] [2024-11-16 02:49:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662545639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:49:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:49:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:49:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745793337] [2024-11-16 02:49:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:49:07,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:49:07,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:49:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:49:07,933 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:49:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:07,977 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-11-16 02:49:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:49:07,983 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-16 02:49:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:07,984 INFO L225 Difference]: With dead ends: 35 [2024-11-16 02:49:07,984 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:49:07,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:49:07,987 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:07,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:49:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:49:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 02:49:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:49:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-16 02:49:07,997 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 26 [2024-11-16 02:49:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:07,998 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-16 02:49:07,998 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:49:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-16 02:49:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:49:08,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:08,000 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:08,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:49:08,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:08,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash -399967522, now seen corresponding path program 1 times [2024-11-16 02:49:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362886145] [2024-11-16 02:49:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:49:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362886145] [2024-11-16 02:49:08,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362886145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:49:08,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:49:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:49:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484164260] [2024-11-16 02:49:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:49:08,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:49:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:49:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:49:08,124 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:49:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:08,191 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-11-16 02:49:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:49:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-16 02:49:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:08,192 INFO L225 Difference]: With dead ends: 57 [2024-11-16 02:49:08,193 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 02:49:08,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 02:49:08,194 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:08,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 84 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 02:49:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2024-11-16 02:49:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 02:49:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-16 02:49:08,206 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2024-11-16 02:49:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:08,206 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-16 02:49:08,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:49:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-16 02:49:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:49:08,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:08,208 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:08,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:49:08,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:08,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1091626390, now seen corresponding path program 1 times [2024-11-16 02:49:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:08,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883171436] [2024-11-16 02:49:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:08,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883171436] [2024-11-16 02:49:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883171436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057077592] [2024-11-16 02:49:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:08,795 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 02:49:08,797 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 02:49:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:08,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 02:49:08,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:09,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:49:09,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:49:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:09,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:09,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-11-16 02:49:09,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-16 02:49:09,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:09,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-16 02:49:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057077592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:09,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-16 02:49:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643357590] [2024-11-16 02:49:09,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:09,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:49:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:49:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:49:09,248 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:49:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:09,422 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-16 02:49:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:49:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-16 02:49:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:09,423 INFO L225 Difference]: With dead ends: 62 [2024-11-16 02:49:09,423 INFO L226 Difference]: Without dead ends: 57 [2024-11-16 02:49:09,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:49:09,424 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:09,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 237 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-16 02:49:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-11-16 02:49:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 02:49:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-11-16 02:49:09,430 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 41 [2024-11-16 02:49:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:09,431 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-11-16 02:49:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:49:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-11-16 02:49:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 02:49:09,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:09,432 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:09,444 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 02:49:09,636 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 02:49:09,637 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:09,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2088698743, now seen corresponding path program 1 times [2024-11-16 02:49:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602941965] [2024-11-16 02:49:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:10,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602941965] [2024-11-16 02:49:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602941965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517038694] [2024-11-16 02:49:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:10,015 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 02:49:10,016 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 02:49:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 02:49:10,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:10,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:49:10,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:49:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:10,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:10,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-11-16 02:49:10,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-16 02:49:10,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:10,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-16 02:49:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:49:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517038694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:10,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:10,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2024-11-16 02:49:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668521908] [2024-11-16 02:49:10,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:10,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 02:49:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 02:49:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:49:10,454 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:49:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:10,640 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2024-11-16 02:49:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:49:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-16 02:49:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:10,642 INFO L225 Difference]: With dead ends: 79 [2024-11-16 02:49:10,644 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 02:49:10,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:49:10,645 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 85 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:10,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 216 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 02:49:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2024-11-16 02:49:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 02:49:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-11-16 02:49:10,658 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 41 [2024-11-16 02:49:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:10,658 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-11-16 02:49:10,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 02:49:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-11-16 02:49:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 02:49:10,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:10,661 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:10,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:49:10,861 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 02:49:10,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:10,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash 840998281, now seen corresponding path program 2 times [2024-11-16 02:49:10,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:10,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941360022] [2024-11-16 02:49:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:49:10,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941360022] [2024-11-16 02:49:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941360022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372819114] [2024-11-16 02:49:10,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:49:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:10,953 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 02:49:10,955 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 02:49:11,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:49:11,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:11,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:49:11,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:49:11,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:49:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372819114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:11,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:11,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:49:11,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395350796] [2024-11-16 02:49:11,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:11,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:49:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:49:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:49:11,088 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-16 02:49:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:11,155 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2024-11-16 02:49:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:49:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-11-16 02:49:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:11,156 INFO L225 Difference]: With dead ends: 99 [2024-11-16 02:49:11,156 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 02:49:11,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:49:11,157 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:11,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 113 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 02:49:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2024-11-16 02:49:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 02:49:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2024-11-16 02:49:11,169 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 43 [2024-11-16 02:49:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:11,170 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2024-11-16 02:49:11,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-16 02:49:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2024-11-16 02:49:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:49:11,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:11,171 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:11,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:49:11,371 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 02:49:11,372 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:11,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1308440033, now seen corresponding path program 3 times [2024-11-16 02:49:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:11,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339784782] [2024-11-16 02:49:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:11,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:11,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:11,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:11,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 02:49:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339784782] [2024-11-16 02:49:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339784782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575062249] [2024-11-16 02:49:11,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:49:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:11,442 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 02:49:11,443 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 02:49:11,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:49:11,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:11,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:49:11,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 02:49:11,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 02:49:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575062249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:11,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:49:11,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868272780] [2024-11-16 02:49:11,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:11,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:49:11,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:49:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:49:11,615 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-16 02:49:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:11,699 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-16 02:49:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:49:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 52 [2024-11-16 02:49:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:11,700 INFO L225 Difference]: With dead ends: 74 [2024-11-16 02:49:11,700 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 02:49:11,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:49:11,701 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:11,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 179 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 02:49:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2024-11-16 02:49:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 02:49:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-16 02:49:11,705 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 52 [2024-11-16 02:49:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:11,706 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-16 02:49:11,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-16 02:49:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-16 02:49:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:49:11,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:11,707 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:11,719 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 02:49:11,907 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 02:49:11,907 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:11,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash -967310433, now seen corresponding path program 4 times [2024-11-16 02:49:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143760160] [2024-11-16 02:49:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:12,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:12,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:12,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:12,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143760160] [2024-11-16 02:49:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143760160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371501548] [2024-11-16 02:49:12,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:49:12,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:12,956 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 02:49:12,957 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 02:49:13,021 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:49:13,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:13,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 02:49:13,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:13,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:13,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2024-11-16 02:49:13,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:13,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-11-16 02:49:13,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:13,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-16 02:49:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:49:13,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:13,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2024-11-16 02:49:13,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:13,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 964 treesize of output 916 [2024-11-16 02:49:14,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:14,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 49 [2024-11-16 02:49:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371501548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:14,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 15] total 43 [2024-11-16 02:49:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511295166] [2024-11-16 02:49:14,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:14,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 02:49:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 02:49:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:49:14,154 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:15,533 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2024-11-16 02:49:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-16 02:49:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 56 [2024-11-16 02:49:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:15,535 INFO L225 Difference]: With dead ends: 129 [2024-11-16 02:49:15,535 INFO L226 Difference]: Without dead ends: 123 [2024-11-16 02:49:15,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=748, Invalid=4364, Unknown=0, NotChecked=0, Total=5112 [2024-11-16 02:49:15,537 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 221 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:15,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 520 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:49:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-16 02:49:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2024-11-16 02:49:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.236842105263158) internal successors, (94), 76 states have internal predecessors, (94), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 02:49:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2024-11-16 02:49:15,546 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 56 [2024-11-16 02:49:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:15,546 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2024-11-16 02:49:15,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2024-11-16 02:49:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:49:15,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:15,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:15,564 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 02:49:15,751 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 02:49:15,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:15,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:15,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1289600574, now seen corresponding path program 1 times [2024-11-16 02:49:15,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:15,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428888673] [2024-11-16 02:49:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:15,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:16,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428888673] [2024-11-16 02:49:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428888673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151976689] [2024-11-16 02:49:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:16,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:16,491 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 02:49:16,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:49:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:16,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 02:49:16,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:16,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:16,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:16,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2024-11-16 02:49:16,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:49:17,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:17,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:49:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:17,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:17,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2024-11-16 02:49:17,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:17,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 505 treesize of output 481 [2024-11-16 02:49:17,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:17,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 53 [2024-11-16 02:49:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151976689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:17,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 40 [2024-11-16 02:49:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32954631] [2024-11-16 02:49:17,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:17,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 02:49:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 02:49:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 02:49:17,476 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 40 states, 40 states have (on average 2.5) internal successors, (100), 40 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:18,448 INFO L93 Difference]: Finished difference Result 141 states and 179 transitions. [2024-11-16 02:49:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:49:18,449 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.5) internal successors, (100), 40 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 56 [2024-11-16 02:49:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:18,450 INFO L225 Difference]: With dead ends: 141 [2024-11-16 02:49:18,450 INFO L226 Difference]: Without dead ends: 136 [2024-11-16 02:49:18,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=3078, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:49:18,452 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 130 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:18,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 667 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:49:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-16 02:49:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 99. [2024-11-16 02:49:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 89 states have (on average 1.247191011235955) internal successors, (111), 89 states have internal predecessors, (111), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 02:49:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2024-11-16 02:49:18,479 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 56 [2024-11-16 02:49:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:18,479 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2024-11-16 02:49:18,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.5) internal successors, (100), 40 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2024-11-16 02:49:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:49:18,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:18,480 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:18,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:49:18,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:18,681 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:18,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:18,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1143979936, now seen corresponding path program 2 times [2024-11-16 02:49:18,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980159877] [2024-11-16 02:49:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:18,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:19,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:19,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:19,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:19,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:19,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980159877] [2024-11-16 02:49:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980159877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79989282] [2024-11-16 02:49:19,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:49:19,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:19,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:19,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:49:19,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:49:19,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:19,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:49:19,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:20,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:20,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:20,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2024-11-16 02:49:20,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-16 02:49:20,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:20,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-16 02:49:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:20,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:20,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2024-11-16 02:49:20,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:20,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1934 treesize of output 1838 [2024-11-16 02:49:20,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:20,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 49 [2024-11-16 02:49:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79989282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:20,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 44 [2024-11-16 02:49:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304760751] [2024-11-16 02:49:20,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:20,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:49:20,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:49:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:49:20,758 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:22,006 INFO L93 Difference]: Finished difference Result 210 states and 257 transitions. [2024-11-16 02:49:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-16 02:49:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 56 [2024-11-16 02:49:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:22,007 INFO L225 Difference]: With dead ends: 210 [2024-11-16 02:49:22,007 INFO L226 Difference]: Without dead ends: 204 [2024-11-16 02:49:22,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=762, Invalid=4494, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 02:49:22,009 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 216 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:22,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 581 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:49:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-16 02:49:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 103. [2024-11-16 02:49:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 92 states have internal predecessors, (116), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 02:49:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2024-11-16 02:49:22,037 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 56 [2024-11-16 02:49:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:22,038 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2024-11-16 02:49:22,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2024-11-16 02:49:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 02:49:22,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:22,041 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:22,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:49:22,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:22,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:22,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -894076353, now seen corresponding path program 2 times [2024-11-16 02:49:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559964378] [2024-11-16 02:49:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:22,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:22,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:22,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:22,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:22,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559964378] [2024-11-16 02:49:22,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559964378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162822478] [2024-11-16 02:49:22,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:49:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:22,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:22,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:49:22,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:49:22,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:22,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 02:49:22,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:23,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:23,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2024-11-16 02:49:23,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:23,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2024-11-16 02:49:23,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:23,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:49:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:23,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:23,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2024-11-16 02:49:23,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:23,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 968 treesize of output 920 [2024-11-16 02:49:23,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:23,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 53 [2024-11-16 02:49:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162822478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:23,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 44 [2024-11-16 02:49:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777929009] [2024-11-16 02:49:23,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:23,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:49:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:49:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:49:23,839 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:24,663 INFO L93 Difference]: Finished difference Result 142 states and 178 transitions. [2024-11-16 02:49:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:49:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 56 [2024-11-16 02:49:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:24,665 INFO L225 Difference]: With dead ends: 142 [2024-11-16 02:49:24,665 INFO L226 Difference]: Without dead ends: 137 [2024-11-16 02:49:24,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=495, Invalid=2927, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:49:24,666 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 119 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:24,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 497 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:49:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-16 02:49:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 96. [2024-11-16 02:49:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 86 states have (on average 1.255813953488372) internal successors, (108), 86 states have internal predecessors, (108), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 02:49:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-11-16 02:49:24,678 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 56 [2024-11-16 02:49:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:24,679 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-11-16 02:49:24,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 02:49:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-11-16 02:49:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 02:49:24,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:24,680 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:24,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:49:24,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 02:49:24,884 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:24,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 49548670, now seen corresponding path program 5 times [2024-11-16 02:49:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794089491] [2024-11-16 02:49:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:24,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:24,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:24,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:24,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:49:24,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794089491] [2024-11-16 02:49:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794089491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913717049] [2024-11-16 02:49:24,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:49:24,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:24,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:24,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:24,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:49:25,030 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:49:25,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:25,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:49:25,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:49:25,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:49:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913717049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:25,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:49:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439443146] [2024-11-16 02:49:25,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:25,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:49:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:49:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:49:25,158 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-16 02:49:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:25,253 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2024-11-16 02:49:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:49:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 58 [2024-11-16 02:49:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:25,254 INFO L225 Difference]: With dead ends: 177 [2024-11-16 02:49:25,254 INFO L226 Difference]: Without dead ends: 133 [2024-11-16 02:49:25,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 114 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:49:25,255 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 39 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:25,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 162 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-16 02:49:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2024-11-16 02:49:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 02:49:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 143 transitions. [2024-11-16 02:49:25,266 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 143 transitions. Word has length 58 [2024-11-16 02:49:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:25,267 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 143 transitions. [2024-11-16 02:49:25,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-16 02:49:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 143 transitions. [2024-11-16 02:49:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 02:49:25,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:25,268 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:25,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:49:25,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:25,469 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:25,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1685450933, now seen corresponding path program 3 times [2024-11-16 02:49:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:25,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4394877] [2024-11-16 02:49:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 02:49:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4394877] [2024-11-16 02:49:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4394877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160425775] [2024-11-16 02:49:25,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:49:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:25,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:25,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:49:25,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:49:25,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:25,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:49:25,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 02:49:25,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 02:49:25,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160425775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:25,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:25,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:49:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346294352] [2024-11-16 02:49:25,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:25,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:49:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:49:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:49:25,736 INFO L87 Difference]: Start difference. First operand 115 states and 143 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-16 02:49:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:25,855 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-16 02:49:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:49:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 67 [2024-11-16 02:49:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:25,857 INFO L225 Difference]: With dead ends: 126 [2024-11-16 02:49:25,857 INFO L226 Difference]: Without dead ends: 114 [2024-11-16 02:49:25,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 133 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:49:25,857 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:25,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 219 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:49:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-16 02:49:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 56. [2024-11-16 02:49:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 02:49:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2024-11-16 02:49:25,865 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 67 [2024-11-16 02:49:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:25,865 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2024-11-16 02:49:25,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-16 02:49:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2024-11-16 02:49:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:49:25,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:25,866 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:25,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:49:26,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:49:26,067 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:26,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash -584669494, now seen corresponding path program 6 times [2024-11-16 02:49:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924763983] [2024-11-16 02:49:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924763983] [2024-11-16 02:49:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924763983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134317210] [2024-11-16 02:49:27,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:49:27,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:27,093 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:27,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:49:27,172 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 02:49:27,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:27,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 02:49:27,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:27,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:27,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:49:27,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:27,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-16 02:49:27,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2024-11-16 02:49:28,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:49:28,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:28,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 65 [2024-11-16 02:49:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:28,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:28,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 95 [2024-11-16 02:49:28,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2854 treesize of output 2838 [2024-11-16 02:49:29,386 INFO L349 Elim1Store]: treesize reduction 30, result has 62.0 percent of original size [2024-11-16 02:49:29,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2024-11-16 02:49:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134317210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:29,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 66 [2024-11-16 02:49:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610411370] [2024-11-16 02:49:29,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:29,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-16 02:49:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-16 02:49:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=3770, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 02:49:29,543 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:35,938 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2024-11-16 02:49:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-16 02:49:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:49:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:35,940 INFO L225 Difference]: With dead ends: 251 [2024-11-16 02:49:35,940 INFO L226 Difference]: Without dead ends: 244 [2024-11-16 02:49:35,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7327 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3228, Invalid=19724, Unknown=0, NotChecked=0, Total=22952 [2024-11-16 02:49:35,944 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 554 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:35,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1257 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 02:49:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-16 02:49:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 146. [2024-11-16 02:49:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 130 states have internal predecessors, (164), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2024-11-16 02:49:35,975 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 71 [2024-11-16 02:49:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:35,975 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2024-11-16 02:49:35,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2024-11-16 02:49:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:49:35,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:35,976 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:35,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:49:36,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:49:36,177 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:36,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -553649687, now seen corresponding path program 4 times [2024-11-16 02:49:36,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:36,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866653696] [2024-11-16 02:49:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:36,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866653696] [2024-11-16 02:49:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866653696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313226275] [2024-11-16 02:49:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:49:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:37,317 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:37,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:49:37,387 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:49:37,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:37,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 02:49:37,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:37,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:38,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:49:38,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:38,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 50 [2024-11-16 02:49:38,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2024-11-16 02:49:38,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:38,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 19 [2024-11-16 02:49:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 54 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:49:38,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:38,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 201 [2024-11-16 02:49:38,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:38,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 613806 treesize of output 593326 [2024-11-16 02:49:39,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:39,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 104 [2024-11-16 02:49:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313226275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:39,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 20] total 60 [2024-11-16 02:49:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666050577] [2024-11-16 02:49:39,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:39,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:49:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:49:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=3234, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:49:39,572 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 60 states, 60 states have (on average 2.2666666666666666) internal successors, (136), 60 states have internal predecessors, (136), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:42,522 INFO L93 Difference]: Finished difference Result 261 states and 321 transitions. [2024-11-16 02:49:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 02:49:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.2666666666666666) internal successors, (136), 60 states have internal predecessors, (136), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:49:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:42,524 INFO L225 Difference]: With dead ends: 261 [2024-11-16 02:49:42,524 INFO L226 Difference]: Without dead ends: 255 [2024-11-16 02:49:42,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2978 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1144, Invalid=9776, Unknown=0, NotChecked=0, Total=10920 [2024-11-16 02:49:42,527 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 256 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:42,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1060 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 02:49:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-16 02:49:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 149. [2024-11-16 02:49:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 134 states have internal predecessors, (166), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-16 02:49:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 190 transitions. [2024-11-16 02:49:42,557 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 190 transitions. Word has length 71 [2024-11-16 02:49:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:42,558 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 190 transitions. [2024-11-16 02:49:42,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.2666666666666666) internal successors, (136), 60 states have internal predecessors, (136), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 190 transitions. [2024-11-16 02:49:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:49:42,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:42,559 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:42,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:49:42,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 02:49:42,759 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:42,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -254903733, now seen corresponding path program 5 times [2024-11-16 02:49:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41580320] [2024-11-16 02:49:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:43,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41580320] [2024-11-16 02:49:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41580320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640612064] [2024-11-16 02:49:43,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:49:43,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:43,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:43,742 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:43,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:49:43,817 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 02:49:43,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:43,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 02:49:43,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:44,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:44,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:49:44,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:44,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-16 02:49:44,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-16 02:49:44,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:44,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-16 02:49:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:44,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:44,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 201 [2024-11-16 02:49:44,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:44,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1230514 treesize of output 1189554 [2024-11-16 02:49:45,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:45,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 99 [2024-11-16 02:49:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640612064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:45,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:45,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 56 [2024-11-16 02:49:45,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848922405] [2024-11-16 02:49:45,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:45,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-16 02:49:45,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:45,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-16 02:49:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2759, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:49:45,432 INFO L87 Difference]: Start difference. First operand 149 states and 190 transitions. Second operand has 56 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:47,832 INFO L93 Difference]: Finished difference Result 262 states and 327 transitions. [2024-11-16 02:49:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-16 02:49:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:49:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:47,834 INFO L225 Difference]: With dead ends: 262 [2024-11-16 02:49:47,834 INFO L226 Difference]: Without dead ends: 255 [2024-11-16 02:49:47,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1173, Invalid=8333, Unknown=0, NotChecked=0, Total=9506 [2024-11-16 02:49:47,835 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 359 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:47,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 901 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:49:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-16 02:49:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 190. [2024-11-16 02:49:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 171 states have (on average 1.2690058479532165) internal successors, (217), 171 states have internal predecessors, (217), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 02:49:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 249 transitions. [2024-11-16 02:49:47,874 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 249 transitions. Word has length 71 [2024-11-16 02:49:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:47,875 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 249 transitions. [2024-11-16 02:49:47,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 249 transitions. [2024-11-16 02:49:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:49:47,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:47,876 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:47,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:49:48,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 02:49:48,080 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:48,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash -223883926, now seen corresponding path program 6 times [2024-11-16 02:49:48,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:48,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70565771] [2024-11-16 02:49:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:48,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:49,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70565771] [2024-11-16 02:49:49,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70565771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830147108] [2024-11-16 02:49:49,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:49:49,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:49,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:49,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:49,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:49:49,282 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 02:49:49,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:49:49,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 02:49:49,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:49,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:49,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:49:49,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:49,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 54 [2024-11-16 02:49:49,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-16 02:49:50,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:50,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 17 [2024-11-16 02:49:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 02:49:50,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:50,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:50,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 109 [2024-11-16 02:49:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:51,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830147108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:51,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:51,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 22] total 63 [2024-11-16 02:49:51,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415756934] [2024-11-16 02:49:51,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:51,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-16 02:49:51,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-16 02:49:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=3431, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:49:51,178 INFO L87 Difference]: Start difference. First operand 190 states and 249 transitions. Second operand has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 63 states have internal predecessors, (135), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:49:53,970 INFO L93 Difference]: Finished difference Result 287 states and 362 transitions. [2024-11-16 02:49:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-16 02:49:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 63 states have internal predecessors, (135), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:49:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:49:53,972 INFO L225 Difference]: With dead ends: 287 [2024-11-16 02:49:53,974 INFO L226 Difference]: Without dead ends: 280 [2024-11-16 02:49:53,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1612, Invalid=9944, Unknown=0, NotChecked=0, Total=11556 [2024-11-16 02:49:53,976 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 261 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:49:53,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 904 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:49:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-16 02:49:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 199. [2024-11-16 02:49:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 179 states have (on average 1.2793296089385475) internal successors, (229), 179 states have internal predecessors, (229), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 02:49:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 263 transitions. [2024-11-16 02:49:54,028 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 263 transitions. Word has length 71 [2024-11-16 02:49:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:49:54,028 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 263 transitions. [2024-11-16 02:49:54,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 63 states have internal predecessors, (135), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:49:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 263 transitions. [2024-11-16 02:49:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:49:54,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:49:54,030 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:49:54,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 02:49:54,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:54,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:49:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:49:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash 384911529, now seen corresponding path program 7 times [2024-11-16 02:49:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:49:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761109508] [2024-11-16 02:49:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:49:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:49:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:49:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:49:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:49:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:49:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:49:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:55,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:49:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761109508] [2024-11-16 02:49:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761109508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:49:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614384926] [2024-11-16 02:49:55,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:49:55,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:49:55,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:49:55,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:49:55,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:49:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:49:55,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-16 02:49:55,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:49:55,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:49:55,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:49:55,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:55,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-16 02:49:55,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2024-11-16 02:49:56,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:56,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-16 02:49:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:49:56,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:49:56,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 201 [2024-11-16 02:49:56,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:56,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 318002 treesize of output 307762 [2024-11-16 02:49:56,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:49:56,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 99 [2024-11-16 02:49:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:49:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614384926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:49:57,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:49:57,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 21] total 60 [2024-11-16 02:49:57,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033227392] [2024-11-16 02:49:57,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:49:57,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:49:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:49:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:49:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=3195, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:49:57,127 INFO L87 Difference]: Start difference. First operand 199 states and 263 transitions. Second operand has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 60 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:00,034 INFO L93 Difference]: Finished difference Result 464 states and 576 transitions. [2024-11-16 02:50:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 02:50:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 60 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:50:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:00,036 INFO L225 Difference]: With dead ends: 464 [2024-11-16 02:50:00,036 INFO L226 Difference]: Without dead ends: 458 [2024-11-16 02:50:00,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3765 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1323, Invalid=10449, Unknown=0, NotChecked=0, Total=11772 [2024-11-16 02:50:00,037 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 407 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:00,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 886 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:50:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-16 02:50:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 227. [2024-11-16 02:50:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 203 states have (on average 1.29064039408867) internal successors, (262), 203 states have internal predecessors, (262), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 02:50:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 302 transitions. [2024-11-16 02:50:00,094 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 302 transitions. Word has length 71 [2024-11-16 02:50:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:00,095 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 302 transitions. [2024-11-16 02:50:00,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 60 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 302 transitions. [2024-11-16 02:50:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:50:00,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:00,096 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:00,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 02:50:00,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:50:00,300 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:00,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash 415931336, now seen corresponding path program 8 times [2024-11-16 02:50:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:00,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009586411] [2024-11-16 02:50:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:00,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:01,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009586411] [2024-11-16 02:50:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009586411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:01,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636683972] [2024-11-16 02:50:01,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:50:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:01,252 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:01,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:50:01,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:50:01,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:01,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 02:50:01,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:01,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:50:01,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:50:01,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:01,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 65 [2024-11-16 02:50:01,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:01,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 45 [2024-11-16 02:50:02,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:02,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 19 [2024-11-16 02:50:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:50:02,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:02,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 201 [2024-11-16 02:50:02,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:02,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166334 treesize of output 161214 [2024-11-16 02:50:02,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:03,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 104 [2024-11-16 02:50:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636683972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:03,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 21] total 61 [2024-11-16 02:50:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095042375] [2024-11-16 02:50:03,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:03,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 02:50:03,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 02:50:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3324, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:50:03,286 INFO L87 Difference]: Start difference. First operand 227 states and 302 transitions. Second operand has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:06,420 INFO L93 Difference]: Finished difference Result 492 states and 619 transitions. [2024-11-16 02:50:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-16 02:50:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:50:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:06,422 INFO L225 Difference]: With dead ends: 492 [2024-11-16 02:50:06,422 INFO L226 Difference]: Without dead ends: 486 [2024-11-16 02:50:06,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1340, Invalid=10870, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 02:50:06,423 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 417 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:06,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1070 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:50:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-11-16 02:50:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 237. [2024-11-16 02:50:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 212 states have (on average 1.2971698113207548) internal successors, (275), 212 states have internal predecessors, (275), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 02:50:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 317 transitions. [2024-11-16 02:50:06,485 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 317 transitions. Word has length 71 [2024-11-16 02:50:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:06,485 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 317 transitions. [2024-11-16 02:50:06,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 317 transitions. [2024-11-16 02:50:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:50:06,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:06,486 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:06,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 02:50:06,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:06,687 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:06,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 714677290, now seen corresponding path program 9 times [2024-11-16 02:50:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597721114] [2024-11-16 02:50:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:07,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597721114] [2024-11-16 02:50:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597721114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904377707] [2024-11-16 02:50:07,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:50:07,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:07,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:07,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:07,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:50:07,999 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:50:08,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:08,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:50:08,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:08,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:50:08,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:50:08,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:08,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-16 02:50:08,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-16 02:50:09,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:09,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-16 02:50:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:09,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:09,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2024-11-16 02:50:09,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:09,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 305 [2024-11-16 02:50:09,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:09,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 99 [2024-11-16 02:50:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904377707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:10,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:10,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 64 [2024-11-16 02:50:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640903703] [2024-11-16 02:50:10,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:10,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 02:50:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 02:50:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=3606, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 02:50:10,153 INFO L87 Difference]: Start difference. First operand 237 states and 317 transitions. Second operand has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:14,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:14,748 INFO L93 Difference]: Finished difference Result 522 states and 662 transitions. [2024-11-16 02:50:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-16 02:50:14,749 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:50:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:14,751 INFO L225 Difference]: With dead ends: 522 [2024-11-16 02:50:14,751 INFO L226 Difference]: Without dead ends: 493 [2024-11-16 02:50:14,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6009 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2330, Invalid=17130, Unknown=0, NotChecked=0, Total=19460 [2024-11-16 02:50:14,752 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 416 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:14,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1036 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:50:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-16 02:50:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 287. [2024-11-16 02:50:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.2996108949416343) internal successors, (334), 257 states have internal predecessors, (334), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-16 02:50:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 386 transitions. [2024-11-16 02:50:14,837 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 386 transitions. Word has length 71 [2024-11-16 02:50:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:14,839 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 386 transitions. [2024-11-16 02:50:14,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 386 transitions. [2024-11-16 02:50:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:50:14,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:14,841 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:14,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 02:50:15,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:15,042 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:15,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash 745697097, now seen corresponding path program 3 times [2024-11-16 02:50:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318717475] [2024-11-16 02:50:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:15,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318717475] [2024-11-16 02:50:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318717475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86807174] [2024-11-16 02:50:15,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:50:15,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:15,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:15,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:50:16,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:50:16,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:16,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:50:16,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:16,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:50:16,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:50:16,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:16,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 54 [2024-11-16 02:50:16,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-16 02:50:17,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:17,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 42 [2024-11-16 02:50:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:17,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:17,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 146 [2024-11-16 02:50:17,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:17,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19998 treesize of output 19614 [2024-11-16 02:50:17,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:17,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 109 [2024-11-16 02:50:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:50:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86807174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:18,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 63 [2024-11-16 02:50:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013543390] [2024-11-16 02:50:18,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:18,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-16 02:50:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-16 02:50:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=3528, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:50:18,239 INFO L87 Difference]: Start difference. First operand 287 states and 386 transitions. Second operand has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:20,480 INFO L93 Difference]: Finished difference Result 368 states and 474 transitions. [2024-11-16 02:50:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:50:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2024-11-16 02:50:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:20,482 INFO L225 Difference]: With dead ends: 368 [2024-11-16 02:50:20,482 INFO L226 Difference]: Without dead ends: 362 [2024-11-16 02:50:20,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2569 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=994, Invalid=7562, Unknown=0, NotChecked=0, Total=8556 [2024-11-16 02:50:20,483 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 247 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:20,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 952 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:50:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-16 02:50:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 297. [2024-11-16 02:50:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 267 states have (on average 1.2921348314606742) internal successors, (345), 267 states have internal predecessors, (345), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-16 02:50:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 397 transitions. [2024-11-16 02:50:20,566 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 397 transitions. Word has length 71 [2024-11-16 02:50:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:20,566 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 397 transitions. [2024-11-16 02:50:20,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 02:50:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 397 transitions. [2024-11-16 02:50:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 02:50:20,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:20,567 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:20,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 02:50:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:20,768 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1854432952, now seen corresponding path program 10 times [2024-11-16 02:50:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793068876] [2024-11-16 02:50:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 02:50:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793068876] [2024-11-16 02:50:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793068876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211978503] [2024-11-16 02:50:20,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:50:20,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:20,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:20,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:20,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:50:20,939 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:50:20,939 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:20,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:50:20,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-16 02:50:21,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-16 02:50:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211978503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:21,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:21,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:50:21,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157202971] [2024-11-16 02:50:21,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:21,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:50:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:50:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:50:21,057 INFO L87 Difference]: Start difference. First operand 297 states and 397 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-16 02:50:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:21,318 INFO L93 Difference]: Finished difference Result 470 states and 606 transitions. [2024-11-16 02:50:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:50:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 73 [2024-11-16 02:50:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:21,320 INFO L225 Difference]: With dead ends: 470 [2024-11-16 02:50:21,320 INFO L226 Difference]: Without dead ends: 362 [2024-11-16 02:50:21,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:50:21,320 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:21,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 151 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-16 02:50:21,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 274. [2024-11-16 02:50:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 245 states have (on average 1.2816326530612245) internal successors, (314), 245 states have internal predecessors, (314), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-16 02:50:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 364 transitions. [2024-11-16 02:50:21,398 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 364 transitions. Word has length 73 [2024-11-16 02:50:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:21,399 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 364 transitions. [2024-11-16 02:50:21,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-16 02:50:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 364 transitions. [2024-11-16 02:50:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:50:21,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:21,400 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:21,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 02:50:21,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:21,601 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:21,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1780186944, now seen corresponding path program 11 times [2024-11-16 02:50:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888954155] [2024-11-16 02:50:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:50:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:50:21,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888954155] [2024-11-16 02:50:21,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888954155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205089918] [2024-11-16 02:50:21,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:50:21,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:21,702 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:21,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:50:21,780 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:50:21,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:21,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:50:21,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:50:21,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 02:50:21,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205089918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:21,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:50:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126896568] [2024-11-16 02:50:21,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:21,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:50:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:50:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:50:21,955 INFO L87 Difference]: Start difference. First operand 274 states and 364 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-16 02:50:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:22,185 INFO L93 Difference]: Finished difference Result 287 states and 377 transitions. [2024-11-16 02:50:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:50:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 82 [2024-11-16 02:50:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:22,187 INFO L225 Difference]: With dead ends: 287 [2024-11-16 02:50:22,187 INFO L226 Difference]: Without dead ends: 273 [2024-11-16 02:50:22,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:50:22,188 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 58 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:22,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 241 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:50:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-16 02:50:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 88. [2024-11-16 02:50:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 77 states have internal predecessors, (93), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 02:50:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2024-11-16 02:50:22,226 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 82 [2024-11-16 02:50:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:22,226 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2024-11-16 02:50:22,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-16 02:50:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2024-11-16 02:50:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 02:50:22,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:22,227 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:22,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 02:50:22,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 02:50:22,428 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:22,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2066840513, now seen corresponding path program 7 times [2024-11-16 02:50:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404880932] [2024-11-16 02:50:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:50:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 02:50:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404880932] [2024-11-16 02:50:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404880932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10098621] [2024-11-16 02:50:23,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:50:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:23,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:23,838 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:23,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:50:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:23,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 02:50:23,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:50:24,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-16 02:50:24,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2024-11-16 02:50:24,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:24,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-16 02:50:24,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:24,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 84 [2024-11-16 02:50:24,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:24,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 70 [2024-11-16 02:50:25,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:25,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 27 [2024-11-16 02:50:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 02:50:25,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:50:25,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 351 [2024-11-16 02:50:25,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:25,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 24864695214 treesize of output 24394933166 [2024-11-16 02:50:28,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:50:28,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 167 [2024-11-16 02:50:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 02:50:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10098621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:50:28,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:50:28,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 25] total 73 [2024-11-16 02:50:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160755538] [2024-11-16 02:50:28,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:50:28,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-16 02:50:28,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:50:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-16 02:50:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4788, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 02:50:28,994 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 73 states, 73 states have (on average 2.2739726027397262) internal successors, (166), 73 states have internal predecessors, (166), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 02:50:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:50:33,977 INFO L93 Difference]: Finished difference Result 300 states and 356 transitions. [2024-11-16 02:50:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 02:50:33,978 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.2739726027397262) internal successors, (166), 73 states have internal predecessors, (166), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 86 [2024-11-16 02:50:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:50:33,979 INFO L225 Difference]: With dead ends: 300 [2024-11-16 02:50:33,979 INFO L226 Difference]: Without dead ends: 293 [2024-11-16 02:50:33,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5514 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1857, Invalid=15965, Unknown=0, NotChecked=0, Total=17822 [2024-11-16 02:50:33,980 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 459 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:50:33,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1188 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 02:50:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-16 02:50:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 179. [2024-11-16 02:50:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 159 states have (on average 1.2452830188679245) internal successors, (198), 159 states have internal predecessors, (198), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 02:50:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 228 transitions. [2024-11-16 02:50:34,065 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 228 transitions. Word has length 86 [2024-11-16 02:50:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:50:34,066 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 228 transitions. [2024-11-16 02:50:34,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.2739726027397262) internal successors, (166), 73 states have internal predecessors, (166), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 02:50:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 228 transitions. [2024-11-16 02:50:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 02:50:34,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:50:34,067 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:50:34,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 02:50:34,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-16 02:50:34,270 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:50:34,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:50:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2055524386, now seen corresponding path program 12 times [2024-11-16 02:50:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:50:34,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118837809] [2024-11-16 02:50:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:50:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:50:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:50:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 02:50:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 02:50:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 02:50:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 02:50:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:50:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:50:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 02:50:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:50:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118837809] [2024-11-16 02:50:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118837809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:50:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772404622] [2024-11-16 02:50:35,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:50:35,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:50:35,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:50:35,891 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:50:35,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 02:50:35,984 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 02:50:35,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:50:35,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-16 02:50:35,990 INFO L278 TraceCheckSpWp]: Computing forward predicates...