./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s5lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s5lif.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 ee6d96902bdd4af72f7a2fd5e7663f1e77332d6bd0663b847529c708e308110b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:34:40,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:34:40,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:34:40,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:34:40,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:34:40,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:34:40,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:34:40,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:34:40,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:34:40,636 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:34:40,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:34:40,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:34:40,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:34:40,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:34:40,637 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:34:40,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:34:40,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:34:40,638 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:34:40,639 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:34:40,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:34:40,639 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:34:40,640 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> ee6d96902bdd4af72f7a2fd5e7663f1e77332d6bd0663b847529c708e308110b [2025-02-05 10:34:40,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:34:40,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:34:40,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:34:40,903 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:34:40,903 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:34:40,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s5lif.c [2025-02-05 10:34:42,040 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5269088e/a9b56e2b87a14f4fadd2e5a1d8ed80c6/FLAGb6d0cff38 [2025-02-05 10:34:42,249 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:34:42,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s5lif.c [2025-02-05 10:34:42,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5269088e/a9b56e2b87a14f4fadd2e5a1d8ed80c6/FLAGb6d0cff38 [2025-02-05 10:34:42,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5269088e/a9b56e2b87a14f4fadd2e5a1d8ed80c6 [2025-02-05 10:34:42,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:34:42,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:34:42,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:34:42,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:34:42,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:34:42,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7334861a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42, skipping insertion in model container [2025-02-05 10:34:42,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:34:42,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s5lif.c[588,601] [2025-02-05 10:34:42,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:34:42,750 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:34:42,758 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s5lif.c[588,601] [2025-02-05 10:34:42,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:34:42,772 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:34:42,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42 WrapperNode [2025-02-05 10:34:42,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:34:42,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:34:42,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:34:42,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:34:42,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,801 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2025-02-05 10:34:42,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:34:42,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:34:42,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:34:42,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:34:42,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,818 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 7, 4]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 3, 2]. [2025-02-05 10:34:42,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,824 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:34:42,829 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:34:42,829 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:34:42,829 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:34:42,831 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (1/1) ... [2025-02-05 10:34:42,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:34:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:42,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:34:42,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:34:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:34:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:34:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:34:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 10:34:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 10:34:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:34:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:34:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:34:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 10:34:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:34:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-05 10:34:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:34:42,934 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:34:42,936 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:34:43,085 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2025-02-05 10:34:43,091 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 10:34:43,091 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:34:43,099 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:34:43,100 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:34:43,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:34:43 BoogieIcfgContainer [2025-02-05 10:34:43,100 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:34:43,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:34:43,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:34:43,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:34:43,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:34:42" (1/3) ... [2025-02-05 10:34:43,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e118809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:34:43, skipping insertion in model container [2025-02-05 10:34:43,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:42" (2/3) ... [2025-02-05 10:34:43,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e118809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:34:43, skipping insertion in model container [2025-02-05 10:34:43,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:34:43" (3/3) ... [2025-02-05 10:34:43,109 INFO L128 eAbstractionObserver]: Analyzing ICFG s5lif.c [2025-02-05 10:34:43,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:34:43,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s5lif.c that has 1 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:34:43,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:34:43,179 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;@65d0823c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:34:43,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:34:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:34:43,186 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:43,187 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:43,187 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:43,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1915737109, now seen corresponding path program 1 times [2025-02-05 10:34:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89964573] [2025-02-05 10:34:43,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:43,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:34:43,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:34:43,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:43,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89964573] [2025-02-05 10:34:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89964573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:34:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:34:43,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:34:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677945886] [2025-02-05 10:34:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:34:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 10:34:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:43,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 10:34:43,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:34:43,340 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:43,350 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2025-02-05 10:34:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 10:34:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:34:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:43,357 INFO L225 Difference]: With dead ends: 30 [2025-02-05 10:34:43,358 INFO L226 Difference]: Without dead ends: 13 [2025-02-05 10:34:43,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:34:43,363 INFO L435 NwaCegarLoop]: 21 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, 21 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 [2025-02-05 10:34:43,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:34:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-02-05 10:34:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-02-05 10:34:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2025-02-05 10:34:43,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2025-02-05 10:34:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:43,384 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2025-02-05 10:34:43,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2025-02-05 10:34:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:34:43,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:43,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:43,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:34:43,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:43,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1491726506, now seen corresponding path program 1 times [2025-02-05 10:34:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121934181] [2025-02-05 10:34:43,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:43,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:34:43,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:34:43,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:43,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121934181] [2025-02-05 10:34:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121934181] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:34:43,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:34:43,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:34:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946988098] [2025-02-05 10:34:43,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:34:43,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:34:43,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:43,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:34:43,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:34:43,541 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:43,578 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2025-02-05 10:34:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:34:43,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:34:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:43,579 INFO L225 Difference]: With dead ends: 25 [2025-02-05 10:34:43,579 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 10:34:43,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:34:43,580 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:43,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:34:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 10:34:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2025-02-05 10:34:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-02-05 10:34:43,584 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2025-02-05 10:34:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:43,584 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-02-05 10:34:43,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-02-05 10:34:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 10:34:43,585 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:43,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:43,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:34:43,585 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:43,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:43,585 INFO L85 PathProgramCache]: Analyzing trace with hash 322328624, now seen corresponding path program 1 times [2025-02-05 10:34:43,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:43,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583130556] [2025-02-05 10:34:43,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:43,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:34:43,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:34:43,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:43,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583130556] [2025-02-05 10:34:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583130556] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365378085] [2025-02-05 10:34:44,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:44,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:44,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:44,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:34:44,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:34:44,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:34:44,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:44,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:44,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 10:34:44,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:44,448 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 11 treesize of output 7 [2025-02-05 10:34:44,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:44,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:44,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:44,741 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 35 treesize of output 31 [2025-02-05 10:34:44,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:44,751 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 44 treesize of output 44 [2025-02-05 10:34:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365378085] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:44,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-02-05 10:34:44,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716613562] [2025-02-05 10:34:44,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:44,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 10:34:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:44,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 10:34:44,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:34:44,847 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:45,135 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2025-02-05 10:34:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 10:34:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-05 10:34:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:45,136 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:34:45,136 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 10:34:45,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:34:45,137 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:45,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 38 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:34:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 10:34:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2025-02-05 10:34:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-02-05 10:34:45,146 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2025-02-05 10:34:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:45,146 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-02-05 10:34:45,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-02-05 10:34:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 10:34:45,147 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:45,147 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:45,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:45,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:45,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:45,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1209832305, now seen corresponding path program 1 times [2025-02-05 10:34:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361826795] [2025-02-05 10:34:45,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:45,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:34:45,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:34:45,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:45,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361826795] [2025-02-05 10:34:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361826795] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977790018] [2025-02-05 10:34:45,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:45,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:45,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:45,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:45,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:34:45,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:34:45,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:34:45,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:45,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:45,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 10:34:45,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:45,586 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 11 treesize of output 7 [2025-02-05 10:34:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:45,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:45,628 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 14 treesize of output 12 [2025-02-05 10:34:45,631 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 14 treesize of output 12 [2025-02-05 10:34:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977790018] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:45,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:45,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-05 10:34:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082656229] [2025-02-05 10:34:45,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:45,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 10:34:45,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:45,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 10:34:45,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:34:45,642 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:45,694 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-02-05 10:34:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:34:45,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-05 10:34:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:45,695 INFO L225 Difference]: With dead ends: 35 [2025-02-05 10:34:45,695 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 10:34:45,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:34:45,696 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:45,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:34:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 10:34:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2025-02-05 10:34:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-02-05 10:34:45,703 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2025-02-05 10:34:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:45,705 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-02-05 10:34:45,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-02-05 10:34:45,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 10:34:45,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:45,706 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:45,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:45,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:45,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:45,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash -493973740, now seen corresponding path program 2 times [2025-02-05 10:34:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376061692] [2025-02-05 10:34:45,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:45,920 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-05 10:34:45,926 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:34:45,926 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:45,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:45,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376061692] [2025-02-05 10:34:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376061692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956975930] [2025-02-05 10:34:45,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:45,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:45,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:34:46,028 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-05 10:34:46,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:34:46,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:46,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:46,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:34:46,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:46,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956975930] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:46,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:46,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:34:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621374742] [2025-02-05 10:34:46,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:46,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:34:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:46,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:34:46,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:34:46,144 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:46,269 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2025-02-05 10:34:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:34:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 10:34:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:46,270 INFO L225 Difference]: With dead ends: 39 [2025-02-05 10:34:46,271 INFO L226 Difference]: Without dead ends: 34 [2025-02-05 10:34:46,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:34:46,271 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:46,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 31 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-05 10:34:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2025-02-05 10:34:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-02-05 10:34:46,282 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2025-02-05 10:34:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:46,283 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-02-05 10:34:46,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-02-05 10:34:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 10:34:46,283 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:46,283 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:46,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:34:46,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:46,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:46,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1402284501, now seen corresponding path program 3 times [2025-02-05 10:34:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246293639] [2025-02-05 10:34:46,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:46,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-05 10:34:46,504 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:34:46,504 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:34:46,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:46,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246293639] [2025-02-05 10:34:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246293639] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989156768] [2025-02-05 10:34:46,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:46,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:46,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:46,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:34:46,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-05 10:34:46,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:34:46,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:34:46,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:46,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:34:46,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:46,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989156768] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:34:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890803187] [2025-02-05 10:34:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:34:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:46,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:34:46,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:34:46,685 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:46,742 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2025-02-05 10:34:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:34:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 10:34:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:46,743 INFO L225 Difference]: With dead ends: 38 [2025-02-05 10:34:46,743 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 10:34:46,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:34:46,743 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:46,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:34:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 10:34:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-02-05 10:34:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2025-02-05 10:34:46,748 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2025-02-05 10:34:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:46,748 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2025-02-05 10:34:46,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2025-02-05 10:34:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 10:34:46,749 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:46,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:46,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:46,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 10:34:46,953 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:46,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash -96415722, now seen corresponding path program 4 times [2025-02-05 10:34:46,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:46,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247793178] [2025-02-05 10:34:46,954 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:34:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:46,961 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-05 10:34:46,989 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:34:46,989 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:34:46,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:34:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:47,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247793178] [2025-02-05 10:34:47,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247793178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:47,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935863514] [2025-02-05 10:34:47,828 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:34:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:47,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:47,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:47,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:34:47,866 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-05 10:34:47,881 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:34:47,882 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:34:47,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:47,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-05 10:34:47,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:47,890 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 11 treesize of output 7 [2025-02-05 10:34:48,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:48,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:48,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2025-02-05 10:34:48,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:48,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:48,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:48,501 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 78 treesize of output 70 [2025-02-05 10:34:48,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:48,518 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 394 treesize of output 391 [2025-02-05 10:34:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:48,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935863514] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:48,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:48,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-05 10:34:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707031522] [2025-02-05 10:34:48,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:48,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 10:34:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:48,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 10:34:48,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 10:34:48,719 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 40 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:51,125 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2025-02-05 10:34:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-05 10:34:51,125 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-05 10:34:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:51,126 INFO L225 Difference]: With dead ends: 77 [2025-02-05 10:34:51,126 INFO L226 Difference]: Without dead ends: 67 [2025-02-05 10:34:51,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1068, Invalid=6072, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 10:34:51,129 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 97 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:51,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 76 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:34:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-05 10:34:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2025-02-05 10:34:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2025-02-05 10:34:51,141 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 20 [2025-02-05 10:34:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:51,141 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2025-02-05 10:34:51,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2025-02-05 10:34:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 10:34:51,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:51,141 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:51,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:34:51,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:51,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:51,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1646394613, now seen corresponding path program 1 times [2025-02-05 10:34:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:51,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085837016] [2025-02-05 10:34:51,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:51,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:51,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 10:34:51,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:34:51,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:51,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:34:51,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085837016] [2025-02-05 10:34:51,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085837016] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151057335] [2025-02-05 10:34:51,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:34:51,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:51,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:51,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:34:51,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 10:34:51,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:34:51,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:51,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:51,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 10:34:51,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:51,568 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 11 treesize of output 7 [2025-02-05 10:34:51,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:51,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 20 [2025-02-05 10:34:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:34:51,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:51,626 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 16 treesize of output 14 [2025-02-05 10:34:51,627 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 16 treesize of output 12 [2025-02-05 10:34:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:34:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151057335] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:51,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-05 10:34:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172656266] [2025-02-05 10:34:51,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:51,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:34:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:51,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:34:51,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:34:51,644 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:51,714 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2025-02-05 10:34:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:34:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-05 10:34:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:51,714 INFO L225 Difference]: With dead ends: 64 [2025-02-05 10:34:51,715 INFO L226 Difference]: Without dead ends: 45 [2025-02-05 10:34:51,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:34:51,715 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:51,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-05 10:34:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-02-05 10:34:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2025-02-05 10:34:51,723 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 20 [2025-02-05 10:34:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:51,723 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2025-02-05 10:34:51,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2025-02-05 10:34:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-05 10:34:51,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:51,724 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:51,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:51,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-05 10:34:51,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:51,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111663, now seen corresponding path program 5 times [2025-02-05 10:34:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097459596] [2025-02-05 10:34:51,925 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:34:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:51,935 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-02-05 10:34:51,943 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 10:34:51,943 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:34:51,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:34:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097459596] [2025-02-05 10:34:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097459596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048473559] [2025-02-05 10:34:51,993 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:34:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:51,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:51,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:51,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:34:52,038 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-02-05 10:34:52,060 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 10:34:52,060 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:34:52,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:52,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:34:52,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:34:52,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:34:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048473559] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:52,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-02-05 10:34:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602335029] [2025-02-05 10:34:52,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:52,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:34:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:52,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:34:52,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:34:52,134 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:52,213 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-02-05 10:34:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:34:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-05 10:34:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:52,214 INFO L225 Difference]: With dead ends: 58 [2025-02-05 10:34:52,214 INFO L226 Difference]: Without dead ends: 31 [2025-02-05 10:34:52,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:34:52,215 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:52,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 29 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-05 10:34:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2025-02-05 10:34:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-02-05 10:34:52,221 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 21 [2025-02-05 10:34:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:52,221 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-02-05 10:34:52,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-02-05 10:34:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:34:52,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:52,222 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:52,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:52,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:52,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:52,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1507597259, now seen corresponding path program 6 times [2025-02-05 10:34:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844857045] [2025-02-05 10:34:52,423 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:34:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:52,431 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 4 equivalence classes. [2025-02-05 10:34:52,447 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:34:52,448 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:34:52,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:34:52,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844857045] [2025-02-05 10:34:52,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844857045] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:52,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685448135] [2025-02-05 10:34:52,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:34:52,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:52,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:52,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 10:34:52,555 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 4 equivalence classes. [2025-02-05 10:34:52,576 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:34:52,576 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:34:52,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:52,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:34:52,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:34:52,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:34:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685448135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:52,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:52,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:34:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122426847] [2025-02-05 10:34:52,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:52,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:34:52,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:52,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:34:52,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:34:52,682 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:52,764 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2025-02-05 10:34:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:34:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-05 10:34:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:52,765 INFO L225 Difference]: With dead ends: 31 [2025-02-05 10:34:52,765 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 10:34:52,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:34:52,766 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:52,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 10:34:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-02-05 10:34:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2025-02-05 10:34:52,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 24 [2025-02-05 10:34:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:52,774 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2025-02-05 10:34:52,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2025-02-05 10:34:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:34:52,776 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:52,776 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:52,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 10:34:52,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:52,976 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:52,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 509156976, now seen corresponding path program 7 times [2025-02-05 10:34:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792442740] [2025-02-05 10:34:52,977 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:34:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:52,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:34:52,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:34:52,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:52,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792442740] [2025-02-05 10:34:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792442740] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028204976] [2025-02-05 10:34:53,816 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:34:53,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:53,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:53,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:53,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:34:53,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:34:53,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:34:53,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:34:53,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:53,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-05 10:34:53,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:53,892 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 11 treesize of output 7 [2025-02-05 10:34:53,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:54,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:54,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2025-02-05 10:34:54,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:54,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 31 [2025-02-05 10:34:54,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:54,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:54,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:54,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:54,827 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 137 treesize of output 125 [2025-02-05 10:34:54,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:54,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11753 treesize of output 11171 [2025-02-05 10:34:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:55,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028204976] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:55,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:55,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 51 [2025-02-05 10:34:55,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000671276] [2025-02-05 10:34:55,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:55,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-05 10:34:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:55,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-05 10:34:55,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=2277, Unknown=0, NotChecked=0, Total=2550 [2025-02-05 10:34:55,086 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:55,735 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2025-02-05 10:34:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-05 10:34:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-05 10:34:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:55,736 INFO L225 Difference]: With dead ends: 56 [2025-02-05 10:34:55,736 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 10:34:55,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=380, Invalid=2926, Unknown=0, NotChecked=0, Total=3306 [2025-02-05 10:34:55,737 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:55,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:34:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 10:34:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2025-02-05 10:34:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2025-02-05 10:34:55,742 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 25 [2025-02-05 10:34:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:55,742 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2025-02-05 10:34:55,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2025-02-05 10:34:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:34:55,742 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:55,743 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:55,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:55,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:55,943 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:55,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1298297487, now seen corresponding path program 2 times [2025-02-05 10:34:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004658307] [2025-02-05 10:34:55,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:55,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-05 10:34:55,967 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:34:55,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:55,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004658307] [2025-02-05 10:34:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004658307] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895307362] [2025-02-05 10:34:56,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:56,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:56,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:56,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:34:56,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-05 10:34:56,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:34:56,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:56,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:56,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 10:34:56,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:56,212 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 11 treesize of output 7 [2025-02-05 10:34:56,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:56,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 20 [2025-02-05 10:34:56,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:56,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 20 [2025-02-05 10:34:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:56,303 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 16 treesize of output 14 [2025-02-05 10:34:56,304 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 16 treesize of output 12 [2025-02-05 10:34:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895307362] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:56,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-02-05 10:34:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504993933] [2025-02-05 10:34:56,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:56,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 10:34:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:56,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 10:34:56,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:34:56,308 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:56,385 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2025-02-05 10:34:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:34:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-05 10:34:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:56,386 INFO L225 Difference]: With dead ends: 51 [2025-02-05 10:34:56,386 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 10:34:56,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:34:56,386 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:56,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 74 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 10:34:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2025-02-05 10:34:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-02-05 10:34:56,394 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2025-02-05 10:34:56,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:56,394 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-02-05 10:34:56,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-02-05 10:34:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 10:34:56,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:56,395 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:56,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 10:34:56,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:34:56,596 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:56,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2031421524, now seen corresponding path program 8 times [2025-02-05 10:34:56,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:56,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570237427] [2025-02-05 10:34:56,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:56,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-05 10:34:56,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:34:56,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:56,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:56,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570237427] [2025-02-05 10:34:56,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570237427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:56,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549401934] [2025-02-05 10:34:56,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:34:56,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:56,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:56,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:56,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:34:56,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-05 10:34:56,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:34:56,748 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:34:56,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:56,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:34:56,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:34:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549401934] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:56,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:34:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990228033] [2025-02-05 10:34:56,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:56,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:34:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:56,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:34:56,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:34:56,867 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:57,046 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2025-02-05 10:34:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:34:57,046 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-05 10:34:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:57,047 INFO L225 Difference]: With dead ends: 53 [2025-02-05 10:34:57,047 INFO L226 Difference]: Without dead ends: 46 [2025-02-05 10:34:57,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:34:57,048 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:57,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-05 10:34:57,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2025-02-05 10:34:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2025-02-05 10:34:57,056 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 26 [2025-02-05 10:34:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:57,056 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2025-02-05 10:34:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2025-02-05 10:34:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 10:34:57,058 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:57,058 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:57,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 10:34:57,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 10:34:57,258 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:57,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:57,259 INFO L85 PathProgramCache]: Analyzing trace with hash -433563119, now seen corresponding path program 3 times [2025-02-05 10:34:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577419189] [2025-02-05 10:34:57,259 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:57,265 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 5 equivalence classes. [2025-02-05 10:34:57,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 29 statements. [2025-02-05 10:34:57,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:34:57,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:34:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577419189] [2025-02-05 10:34:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577419189] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036164522] [2025-02-05 10:34:57,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:57,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:57,350 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:57,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:34:57,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 5 equivalence classes. [2025-02-05 10:34:57,420 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 29 statements. [2025-02-05 10:34:57,420 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:34:57,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:57,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:34:57,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:34:57,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:34:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:34:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036164522] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:34:57,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:34:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:34:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424311637] [2025-02-05 10:34:57,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:34:57,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:34:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:34:57,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:34:57,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:34:57,543 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:34:57,628 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2025-02-05 10:34:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:34:57,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-05 10:34:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:34:57,629 INFO L225 Difference]: With dead ends: 57 [2025-02-05 10:34:57,629 INFO L226 Difference]: Without dead ends: 33 [2025-02-05 10:34:57,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:34:57,630 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 37 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:34:57,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:34:57,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-05 10:34:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2025-02-05 10:34:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2025-02-05 10:34:57,639 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 29 [2025-02-05 10:34:57,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:34:57,639 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2025-02-05 10:34:57,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:34:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2025-02-05 10:34:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 10:34:57,640 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:34:57,640 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:34:57,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-05 10:34:57,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:57,846 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:34:57,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:34:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1460355286, now seen corresponding path program 9 times [2025-02-05 10:34:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:34:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994771460] [2025-02-05 10:34:57,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:34:57,855 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 5 equivalence classes. [2025-02-05 10:34:57,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 10:34:57,883 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:34:57,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:34:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:34:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994771460] [2025-02-05 10:34:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994771460] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:34:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276987149] [2025-02-05 10:34:59,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:34:59,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:34:59,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:34:59,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:34:59,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:34:59,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 5 equivalence classes. [2025-02-05 10:34:59,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 10:34:59,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:34:59,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:34:59,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-05 10:34:59,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:34:59,263 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 11 treesize of output 7 [2025-02-05 10:34:59,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:59,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:34:59,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2025-02-05 10:34:59,500 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2025-02-05 10:34:59,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 41 [2025-02-05 10:34:59,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:34:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:34:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:34:59,661 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2025-02-05 10:34:59,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 51 [2025-02-05 10:34:59,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:59,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:34:59,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:00,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:00,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 58 [2025-02-05 10:35:00,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 3 [2025-02-05 10:35:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:00,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:00,868 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 205 treesize of output 191 [2025-02-05 10:35:00,958 INFO L349 Elim1Store]: treesize reduction 40, result has 71.2 percent of original size [2025-02-05 10:35:00,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89396 treesize of output 86907 [2025-02-05 10:35:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276987149] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:02,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:02,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 64 [2025-02-05 10:35:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864501347] [2025-02-05 10:35:02,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:02,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 10:35:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:02,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 10:35:02,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=591, Invalid=3441, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 10:35:02,060 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 64 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:07,530 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2025-02-05 10:35:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-05 10:35:07,530 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-05 10:35:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:07,531 INFO L225 Difference]: With dead ends: 105 [2025-02-05 10:35:07,531 INFO L226 Difference]: Without dead ends: 96 [2025-02-05 10:35:07,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4879 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2355, Invalid=12897, Unknown=0, NotChecked=0, Total=15252 [2025-02-05 10:35:07,534 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 83 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:07,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 131 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 10:35:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-05 10:35:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2025-02-05 10:35:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2025-02-05 10:35:07,556 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 30 [2025-02-05 10:35:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:07,556 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2025-02-05 10:35:07,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2025-02-05 10:35:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 10:35:07,557 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:07,557 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:07,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 10:35:07,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:07,758 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:07,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1263841781, now seen corresponding path program 4 times [2025-02-05 10:35:07,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:07,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977207327] [2025-02-05 10:35:07,758 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:35:07,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:07,766 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 10:35:07,771 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 26 of 30 statements. [2025-02-05 10:35:07,771 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:35:07,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:35:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977207327] [2025-02-05 10:35:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977207327] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733705887] [2025-02-05 10:35:07,924 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:35:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:07,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:07,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 10:35:07,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 10:35:07,989 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 26 of 30 statements. [2025-02-05 10:35:07,990 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:35:07,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:07,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 10:35:07,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:07,997 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 11 [2025-02-05 10:35:08,046 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2025-02-05 10:35:08,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2025-02-05 10:35:08,115 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2025-02-05 10:35:08,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2025-02-05 10:35:08,243 INFO L349 Elim1Store]: treesize reduction 91, result has 33.1 percent of original size [2025-02-05 10:35:08,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 86 [2025-02-05 10:35:08,379 INFO L349 Elim1Store]: treesize reduction 33, result has 23.3 percent of original size [2025-02-05 10:35:08,380 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 60 treesize of output 43 [2025-02-05 10:35:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:35:08,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:35:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733705887] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:08,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:08,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 10] total 22 [2025-02-05 10:35:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545833904] [2025-02-05 10:35:08,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:08,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 10:35:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:08,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 10:35:08,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:35:08,526 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:08,943 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2025-02-05 10:35:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:35:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-05 10:35:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:08,944 INFO L225 Difference]: With dead ends: 87 [2025-02-05 10:35:08,944 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 10:35:08,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 10:35:08,945 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:08,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:35:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 10:35:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2025-02-05 10:35:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2025-02-05 10:35:08,961 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 30 [2025-02-05 10:35:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:08,961 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2025-02-05 10:35:08,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2025-02-05 10:35:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:35:08,961 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:08,962 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:08,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 10:35:09,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 10:35:09,162 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1754667662, now seen corresponding path program 10 times [2025-02-05 10:35:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690306775] [2025-02-05 10:35:09,163 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:35:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:09,168 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:35:09,177 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:35:09,177 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:35:09,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:09,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690306775] [2025-02-05 10:35:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690306775] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086746547] [2025-02-05 10:35:09,263 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:35:09,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:09,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:09,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 10:35:09,318 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:35:09,358 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:35:09,358 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:35:09,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:09,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:35:09,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:09,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:09,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086746547] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:09,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:09,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-02-05 10:35:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420999955] [2025-02-05 10:35:09,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:09,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 10:35:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:09,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 10:35:09,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:35:09,479 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:09,663 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2025-02-05 10:35:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:35:09,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-05 10:35:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:09,664 INFO L225 Difference]: With dead ends: 100 [2025-02-05 10:35:09,664 INFO L226 Difference]: Without dead ends: 92 [2025-02-05 10:35:09,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:35:09,665 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:09,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 22 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:35:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-02-05 10:35:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 53. [2025-02-05 10:35:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2025-02-05 10:35:09,679 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 31 [2025-02-05 10:35:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:09,679 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2025-02-05 10:35:09,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2025-02-05 10:35:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:35:09,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:09,679 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:09,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 10:35:09,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 10:35:09,880 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:09,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1051859978, now seen corresponding path program 11 times [2025-02-05 10:35:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:09,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941588635] [2025-02-05 10:35:09,880 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:35:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:09,888 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 5 equivalence classes. [2025-02-05 10:35:09,900 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:35:09,900 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:35:09,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941588635] [2025-02-05 10:35:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941588635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094939112] [2025-02-05 10:35:09,992 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:35:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:09,994 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:09,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 10:35:10,053 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 5 equivalence classes. [2025-02-05 10:35:10,158 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:35:10,159 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:35:10,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:10,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 10:35:10,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:10,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:35:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094939112] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:10,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:10,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2025-02-05 10:35:10,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251321846] [2025-02-05 10:35:10,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:10,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 10:35:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:10,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 10:35:10,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:35:10,307 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:10,504 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2025-02-05 10:35:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:35:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-05 10:35:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:10,505 INFO L225 Difference]: With dead ends: 109 [2025-02-05 10:35:10,505 INFO L226 Difference]: Without dead ends: 70 [2025-02-05 10:35:10,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:35:10,505 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:10,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 33 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:35:10,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-02-05 10:35:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2025-02-05 10:35:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2025-02-05 10:35:10,526 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 32 [2025-02-05 10:35:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:10,526 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2025-02-05 10:35:10,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2025-02-05 10:35:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 10:35:10,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:10,527 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:10,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 10:35:10,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 10:35:10,727 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:10,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -255642448, now seen corresponding path program 12 times [2025-02-05 10:35:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428565759] [2025-02-05 10:35:10,728 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:35:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:10,734 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 6 equivalence classes. [2025-02-05 10:35:10,749 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:35:10,750 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:35:10,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428565759] [2025-02-05 10:35:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428565759] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104651307] [2025-02-05 10:35:12,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:35:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:12,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:12,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 10:35:12,468 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 6 equivalence classes. [2025-02-05 10:35:12,528 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:35:12,528 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:35:12,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:12,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 94 conjuncts are in the unsatisfiable core [2025-02-05 10:35:12,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:12,537 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 11 treesize of output 7 [2025-02-05 10:35:12,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:12,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:12,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2025-02-05 10:35:12,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:12,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 31 [2025-02-05 10:35:13,045 INFO L349 Elim1Store]: treesize reduction 60, result has 36.2 percent of original size [2025-02-05 10:35:13,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 55 [2025-02-05 10:35:13,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,234 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2025-02-05 10:35:13,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 61 [2025-02-05 10:35:13,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:13,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:13,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:13,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 [2025-02-05 10:35:13,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:35:13,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:13,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 116 [2025-02-05 10:35:13,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 156 treesize of output 105 [2025-02-05 10:35:13,862 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 51 treesize of output 39 [2025-02-05 10:35:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:13,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:15,287 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 258 treesize of output 242 [2025-02-05 10:35:15,395 INFO L349 Elim1Store]: treesize reduction 60, result has 67.9 percent of original size [2025-02-05 10:35:15,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 800064 treesize of output 789916 [2025-02-05 10:35:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104651307] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:17,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 85 [2025-02-05 10:35:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124654230] [2025-02-05 10:35:17,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:17,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-02-05 10:35:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:17,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-02-05 10:35:17,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1019, Invalid=6121, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 10:35:17,056 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 85 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 85 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:22,248 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2025-02-05 10:35:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-05 10:35:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 85 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-02-05 10:35:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:22,249 INFO L225 Difference]: With dead ends: 87 [2025-02-05 10:35:22,249 INFO L226 Difference]: Without dead ends: 73 [2025-02-05 10:35:22,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4797 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2224, Invalid=12538, Unknown=0, NotChecked=0, Total=14762 [2025-02-05 10:35:22,252 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 116 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:22,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 128 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:35:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-05 10:35:22,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2025-02-05 10:35:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2025-02-05 10:35:22,279 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 35 [2025-02-05 10:35:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:22,279 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2025-02-05 10:35:22,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 85 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2025-02-05 10:35:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 10:35:22,280 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:22,280 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:22,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-05 10:35:22,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:22,480 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:22,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash -761201073, now seen corresponding path program 5 times [2025-02-05 10:35:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:22,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635666975] [2025-02-05 10:35:22,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:35:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:22,488 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 6 equivalence classes. [2025-02-05 10:35:22,500 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:35:22,500 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:35:22,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 10:35:22,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:22,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635666975] [2025-02-05 10:35:22,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635666975] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:22,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118694008] [2025-02-05 10:35:22,723 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:35:22,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:22,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:22,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:22,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 10:35:22,792 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 6 equivalence classes. [2025-02-05 10:35:22,915 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:35:22,915 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:35:22,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:22,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 10:35:22,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:22,923 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 13 treesize of output 9 [2025-02-05 10:35:22,941 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-02-05 10:35:22,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-05 10:35:23,000 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-02-05 10:35:23,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 36 [2025-02-05 10:35:23,045 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-02-05 10:35:23,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 38 [2025-02-05 10:35:23,089 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-02-05 10:35:23,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 38 [2025-02-05 10:35:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 10:35:23,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:23,144 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 23 treesize of output 21 [2025-02-05 10:35:23,146 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 25 treesize of output 21 [2025-02-05 10:35:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 10:35:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118694008] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:23,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:23,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-02-05 10:35:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380578815] [2025-02-05 10:35:23,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:23,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:35:23,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:23,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:35:23,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:35:23,151 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:23,292 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2025-02-05 10:35:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:35:23,292 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-02-05 10:35:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:23,293 INFO L225 Difference]: With dead ends: 81 [2025-02-05 10:35:23,293 INFO L226 Difference]: Without dead ends: 40 [2025-02-05 10:35:23,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:35:23,293 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:23,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:35:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-05 10:35:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-02-05 10:35:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2025-02-05 10:35:23,306 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2025-02-05 10:35:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:23,306 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2025-02-05 10:35:23,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2025-02-05 10:35:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:35:23,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:23,307 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:23,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-05 10:35:23,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:23,507 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:23,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1537975375, now seen corresponding path program 13 times [2025-02-05 10:35:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:23,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953808235] [2025-02-05 10:35:23,508 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:35:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:23,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:35:23,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:35:23,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:35:23,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-05 10:35:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953808235] [2025-02-05 10:35:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953808235] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494145062] [2025-02-05 10:35:23,644 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:35:23,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:23,646 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:23,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 10:35:23,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:35:23,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:35:23,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:35:23,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:23,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 10:35:23,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-05 10:35:23,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-05 10:35:23,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494145062] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:23,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:23,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-02-05 10:35:23,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567906343] [2025-02-05 10:35:23,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:23,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 10:35:23,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:23,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 10:35:23,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:35:23,883 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:24,014 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2025-02-05 10:35:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 10:35:24,015 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-05 10:35:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:24,015 INFO L225 Difference]: With dead ends: 49 [2025-02-05 10:35:24,015 INFO L226 Difference]: Without dead ends: 46 [2025-02-05 10:35:24,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2025-02-05 10:35:24,016 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 83 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:24,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 29 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:35:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-05 10:35:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2025-02-05 10:35:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2025-02-05 10:35:24,029 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2025-02-05 10:35:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:24,029 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2025-02-05 10:35:24,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2025-02-05 10:35:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 10:35:24,029 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:24,029 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:24,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-05 10:35:24,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:24,230 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:24,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 432628118, now seen corresponding path program 14 times [2025-02-05 10:35:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194518066] [2025-02-05 10:35:24,230 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:35:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:24,238 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 10:35:24,249 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:35:24,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:35:24,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:26,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194518066] [2025-02-05 10:35:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194518066] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497293412] [2025-02-05 10:35:26,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:35:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:26,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:26,003 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:26,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 10:35:26,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 10:35:26,088 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:35:26,088 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:35:26,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:26,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-02-05 10:35:26,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:26,097 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 11 treesize of output 7 [2025-02-05 10:35:26,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:26,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:26,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2025-02-05 10:35:26,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:26,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 31 [2025-02-05 10:35:26,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:26,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 41 [2025-02-05 10:35:26,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:26,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2025-02-05 10:35:26,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:26,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2025-02-05 10:35:27,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2025-02-05 10:35:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:27,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:35:29,194 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 410 treesize of output 386 [2025-02-05 10:35:29,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:35:29,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1474854698778 treesize of output 1451232378927 [2025-02-05 10:35:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:35:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497293412] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:35:31,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:35:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 93 [2025-02-05 10:35:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206412310] [2025-02-05 10:35:31,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:35:31,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2025-02-05 10:35:31,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:35:31,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2025-02-05 10:35:31,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=7898, Unknown=0, NotChecked=0, Total=8556 [2025-02-05 10:35:31,747 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:35:33,257 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2025-02-05 10:35:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-05 10:35:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-02-05 10:35:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:35:33,258 INFO L225 Difference]: With dead ends: 90 [2025-02-05 10:35:33,258 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 10:35:33,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3355 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=760, Invalid=8942, Unknown=0, NotChecked=0, Total=9702 [2025-02-05 10:35:33,261 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:35:33,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 159 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:35:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 10:35:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2025-02-05 10:35:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2025-02-05 10:35:33,277 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 40 [2025-02-05 10:35:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:35:33,277 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2025-02-05 10:35:33,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:35:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2025-02-05 10:35:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 10:35:33,278 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:35:33,278 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:35:33,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 10:35:33,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:33,478 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:35:33,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:35:33,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1940179927, now seen corresponding path program 6 times [2025-02-05 10:35:33,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:35:33,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658245221] [2025-02-05 10:35:33,479 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:35:33,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:35:33,486 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 7 equivalence classes. [2025-02-05 10:35:33,504 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:35:33,505 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:35:33,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 58 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:35:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:35:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658245221] [2025-02-05 10:35:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658245221] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:35:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746766033] [2025-02-05 10:35:33,910 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:35:33,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:35:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:35:33,912 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:35:33,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 10:35:33,987 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 7 equivalence classes. [2025-02-05 10:35:34,098 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:35:34,098 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:35:34,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:35:34,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-05 10:35:34,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:35:34,157 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 11 treesize of output 7 [2025-02-05 10:35:34,180 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-02-05 10:35:34,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2025-02-05 10:35:34,265 INFO L349 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2025-02-05 10:35:34,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 44 [2025-02-05 10:35:34,451 INFO L349 Elim1Store]: treesize reduction 100, result has 44.8 percent of original size [2025-02-05 10:35:34,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 88 treesize of output 134 [2025-02-05 10:35:36,846 INFO L349 Elim1Store]: treesize reduction 1076, result has 21.3 percent of original size [2025-02-05 10:35:36,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 134 case distinctions, treesize of input 407 treesize of output 550