./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s1if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s1if.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a3387bc5e2da462b89ff029159e07dcc81e24b9a3389e54a743d70d22e0e9eb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:55:53,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:55:53,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:55:53,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:55:53,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:55:53,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:55:53,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:55:53,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:55:53,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:55:53,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:55:53,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:55:53,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:55:53,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:55:53,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:55:53,842 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:55:53,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:55:53,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:55:53,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:55:53,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:55:53,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:55:53,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:55:53,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:55:53,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:55:53,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:55:53,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:55:53,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:55:53,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:55:53,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:55:53,847 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:55:53,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:55:53,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:55:53,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:55:53,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:55:53,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:55:53,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:55:53,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:55:53,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:55:53,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:55:53,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:55:53,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:55:53,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:55:53,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:55:53,852 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3387bc5e2da462b89ff029159e07dcc81e24b9a3389e54a743d70d22e0e9eb [2024-11-16 02:55:54,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:55:54,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:55:54,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:55:54,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:55:54,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:55:54,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s1if.c [2024-11-16 02:55:55,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:55:55,797 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:55:55,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s1if.c [2024-11-16 02:55:55,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16464a80/3a4308965b2849f189eb2b281f204599/FLAGcef710384 [2024-11-16 02:55:55,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16464a80/3a4308965b2849f189eb2b281f204599 [2024-11-16 02:55:55,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:55:55,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:55:55,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:55:55,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:55:55,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:55:55,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:55:55" (1/1) ... [2024-11-16 02:55:55,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd8bdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:55, skipping insertion in model container [2024-11-16 02:55:55,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:55:55" (1/1) ... [2024-11-16 02:55:55,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:55:56,029 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s1if.c[587,600] [2024-11-16 02:55:56,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:55:56,064 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:55:56,079 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s1if.c[587,600] [2024-11-16 02:55:56,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:55:56,114 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:55:56,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56 WrapperNode [2024-11-16 02:55:56,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:55:56,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:55:56,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:55:56,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:55:56,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,153 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-11-16 02:55:56,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:55:56,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:55:56,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:55:56,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:55:56,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,190 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 4, 6]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 1, 3]. [2024-11-16 02:55:56,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,197 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:55:56,206 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:55:56,206 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:55:56,206 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:55:56,207 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (1/1) ... [2024-11-16 02:55:56,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:55:56,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:55:56,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:55:56,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:55:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:55:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:55:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:55:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:55:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:55:56,412 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:55:56,414 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:55:56,597 INFO L1250 $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; [2024-11-16 02:55:56,608 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 02:55:56,611 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:55:56,623 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:55:56,623 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:55:56,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:55:56 BoogieIcfgContainer [2024-11-16 02:55:56,625 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:55:56,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:55:56,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:55:56,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:55:56,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:55:55" (1/3) ... [2024-11-16 02:55:56,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48302cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:55:56, skipping insertion in model container [2024-11-16 02:55:56,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:55:56" (2/3) ... [2024-11-16 02:55:56,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48302cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:55:56, skipping insertion in model container [2024-11-16 02:55:56,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:55:56" (3/3) ... [2024-11-16 02:55:56,636 INFO L112 eAbstractionObserver]: Analyzing ICFG s1if.c [2024-11-16 02:55:56,654 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:55:56,654 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:55:56,710 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:55:56,716 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;@2886483f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:55:56,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:55:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 02:55:56,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:55:56,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:55:56,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:55:56,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:55:56,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2136143925, now seen corresponding path program 1 times [2024-11-16 02:55:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:55:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950293583] [2024-11-16 02:55:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:55:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:55:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950293583] [2024-11-16 02:55:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950293583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:55:56,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:55:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:55:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176540423] [2024-11-16 02:55:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:55:56,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:55:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:55:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:55:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:55:57,023 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:57,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:55:57,033 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-11-16 02:55:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:55:57,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-16 02:55:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:55:57,040 INFO L225 Difference]: With dead ends: 39 [2024-11-16 02:55:57,041 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 02:55:57,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:55:57,050 INFO L432 NwaCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:55:57,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:55:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 02:55:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 02:55:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-16 02:55:57,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2024-11-16 02:55:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:55:57,084 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-16 02:55:57,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-16 02:55:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:55:57,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:55:57,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:55:57,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:55:57,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:55:57,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:55:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 164193969, now seen corresponding path program 1 times [2024-11-16 02:55:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:55:57,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684381756] [2024-11-16 02:55:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:55:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:55:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684381756] [2024-11-16 02:55:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684381756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:55:57,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:55:57,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:55:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439373033] [2024-11-16 02:55:57,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:55:57,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:55:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:55:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:55:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:55:57,271 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:55:57,332 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-16 02:55:57,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:55:57,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-16 02:55:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:55:57,333 INFO L225 Difference]: With dead ends: 33 [2024-11-16 02:55:57,333 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 02:55:57,334 INFO L431 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 [2024-11-16 02:55:57,335 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:55:57,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:55:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 02:55:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-16 02:55:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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) [2024-11-16 02:55:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-16 02:55:57,340 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2024-11-16 02:55:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:55:57,340 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-16 02:55:57,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-16 02:55:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:55:57,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:55:57,341 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:55:57,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:55:57,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:55:57,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:55:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1719376912, now seen corresponding path program 1 times [2024-11-16 02:55:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:55:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530536232] [2024-11-16 02:55:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:55:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:58,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:55:58,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530536232] [2024-11-16 02:55:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530536232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:55:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382816777] [2024-11-16 02:55:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:55:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:55:58,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:55:58,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:55:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:58,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 02:55:58,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:55:58,204 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 [2024-11-16 02:55:58,400 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 [2024-11-16 02:55:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:58,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:55:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382816777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:55:58,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:55:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-16 02:55:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610195122] [2024-11-16 02:55:58,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:55:58,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:55:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:55:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:55:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:55:58,617 INFO L87 Difference]: Start difference. First operand 21 states and 23 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) [2024-11-16 02:55:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:55:58,895 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-16 02:55:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:55:58,895 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 20 [2024-11-16 02:55:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:55:58,898 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:55:58,898 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:55:58,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:55:58,901 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:55:58,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:55:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:55:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-11-16 02:55:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:55:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 02:55:58,914 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2024-11-16 02:55:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:55:58,914 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 02:55:58,914 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) [2024-11-16 02:55:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 02:55:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:55:58,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:55:58,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:55:58,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:55:59,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:55:59,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:55:59,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:55:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash 23433423, now seen corresponding path program 1 times [2024-11-16 02:55:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:55:59,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71148306] [2024-11-16 02:55:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:55:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:55:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71148306] [2024-11-16 02:55:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71148306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:55:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563323107] [2024-11-16 02:55:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:59,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:55:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:55:59,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:55:59,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:55:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:59,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:55:59,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:55:59,400 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 [2024-11-16 02:55:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:59,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:55:59,463 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 [2024-11-16 02:55:59,467 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 [2024-11-16 02:55:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563323107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:55:59,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:55:59,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 02:55:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760392623] [2024-11-16 02:55:59,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:55:59,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:55:59,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:55:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:55:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:55:59,479 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2024-11-16 02:55:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:55:59,533 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-16 02:55:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:55:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 20 [2024-11-16 02:55:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:55:59,543 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:55:59,543 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:55:59,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:55:59,544 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:55:59,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 71 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:55:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:55:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-16 02:55:59,549 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) [2024-11-16 02:55:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-16 02:55:59,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2024-11-16 02:55:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:55:59,550 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-16 02:55:59,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2024-11-16 02:55:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-16 02:55:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:55:59,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:55:59,551 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:55:59,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:55:59,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:55:59,752 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:55:59,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:55:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1841783055, now seen corresponding path program 2 times [2024-11-16 02:55:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:55:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022867193] [2024-11-16 02:55:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:55:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:55:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:55:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:59,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:55:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022867193] [2024-11-16 02:55:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022867193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:55:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345441502] [2024-11-16 02:55:59,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:55:59,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:55:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:55:59,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:55:59,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:55:59,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:55:59,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:55:59,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:55:59,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:55:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:55:59,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:00,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345441502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:00,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:00,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:56:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226314018] [2024-11-16 02:56:00,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:00,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:56:00,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:00,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:56:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:00,029 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:00,156 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-16 02:56:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:56:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 22 [2024-11-16 02:56:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:00,157 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:56:00,157 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:56:00,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:56:00,158 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:00,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 83 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:56:00,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2024-11-16 02:56:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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) [2024-11-16 02:56:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-16 02:56:00,169 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2024-11-16 02:56:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:00,170 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-16 02:56:00,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-16 02:56:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:56:00,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:00,172 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:00,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:56:00,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:00,373 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:00,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1645716078, now seen corresponding path program 3 times [2024-11-16 02:56:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306857290] [2024-11-16 02:56:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:00,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:00,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306857290] [2024-11-16 02:56:00,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306857290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:00,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096713811] [2024-11-16 02:56:00,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:00,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:00,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:00,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:00,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:56:00,515 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:56:00,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:00,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:56:00,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:00,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096713811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:00,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 02:56:00,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486925855] [2024-11-16 02:56:00,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:00,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 02:56:00,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 02:56:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 02:56:00,607 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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) [2024-11-16 02:56:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:00,665 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-16 02:56:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:56:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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 24 [2024-11-16 02:56:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:00,667 INFO L225 Difference]: With dead ends: 45 [2024-11-16 02:56:00,667 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 02:56:00,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:56:00,668 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:00,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 51 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:56:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 02:56:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-16 02:56:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-16 02:56:00,674 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-16 02:56:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:00,674 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-16 02:56:00,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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) [2024-11-16 02:56:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-16 02:56:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:56:00,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:00,676 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:00,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:00,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:00,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:00,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash 541357295, now seen corresponding path program 4 times [2024-11-16 02:56:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:00,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315817220] [2024-11-16 02:56:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:00,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315817220] [2024-11-16 02:56:01,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315817220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29931006] [2024-11-16 02:56:01,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:01,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:01,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:01,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:01,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:56:01,504 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:01,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:01,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 02:56:01,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:01,513 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 [2024-11-16 02:56:01,668 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 [2024-11-16 02:56:01,847 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 [2024-11-16 02:56:01,862 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:01,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-16 02:56:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:01,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:02,191 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 02:56:02,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-16 02:56:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29931006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:02,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-16 02:56:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132079957] [2024-11-16 02:56:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:02,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:56:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:56:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:56:02,464 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 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) [2024-11-16 02:56:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:03,714 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2024-11-16 02:56:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 02:56:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 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) Word has length 26 [2024-11-16 02:56:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:03,716 INFO L225 Difference]: With dead ends: 71 [2024-11-16 02:56:03,716 INFO L226 Difference]: Without dead ends: 59 [2024-11-16 02:56:03,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=346, Invalid=2306, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 02:56:03,718 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:03,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 229 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:56:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-16 02:56:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-11-16 02:56:03,727 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) [2024-11-16 02:56:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-16 02:56:03,728 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 26 [2024-11-16 02:56:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:03,728 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-16 02:56:03,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 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) [2024-11-16 02:56:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-16 02:56:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:56:03,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:03,729 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:03,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:03,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:03,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:03,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2010799666, now seen corresponding path program 1 times [2024-11-16 02:56:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911296962] [2024-11-16 02:56:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911296962] [2024-11-16 02:56:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911296962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353059978] [2024-11-16 02:56:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:04,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:04,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:04,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:56:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:56:04,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:04,226 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 [2024-11-16 02:56:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:04,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:04,330 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 [2024-11-16 02:56:04,333 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 [2024-11-16 02:56:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353059978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:04,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-16 02:56:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071638443] [2024-11-16 02:56:04,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:04,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:04,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:04,358 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2024-11-16 02:56:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:04,442 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2024-11-16 02:56:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:56:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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 26 [2024-11-16 02:56:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:04,447 INFO L225 Difference]: With dead ends: 82 [2024-11-16 02:56:04,447 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 02:56:04,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:56:04,448 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:04,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 117 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 02:56:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-11-16 02:56:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2024-11-16 02:56:04,459 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 26 [2024-11-16 02:56:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:04,459 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2024-11-16 02:56:04,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2024-11-16 02:56:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2024-11-16 02:56:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:56:04,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:04,460 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:04,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:56:04,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:04,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:04,661 INFO L85 PathProgramCache]: Analyzing trace with hash 109488944, now seen corresponding path program 5 times [2024-11-16 02:56:04,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:04,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571708810] [2024-11-16 02:56:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:04,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571708810] [2024-11-16 02:56:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571708810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096638039] [2024-11-16 02:56:04,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:04,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:04,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:04,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:56:04,858 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:56:04,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:04,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:04,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:04,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096638039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:05,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:05,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144367200] [2024-11-16 02:56:05,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:05,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:05,004 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) [2024-11-16 02:56:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:05,152 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2024-11-16 02:56:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) Word has length 28 [2024-11-16 02:56:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:05,154 INFO L225 Difference]: With dead ends: 67 [2024-11-16 02:56:05,155 INFO L226 Difference]: Without dead ends: 62 [2024-11-16 02:56:05,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:56:05,156 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:05,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 86 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-16 02:56:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2024-11-16 02:56:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2024-11-16 02:56:05,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 28 [2024-11-16 02:56:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:05,170 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2024-11-16 02:56:05,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) [2024-11-16 02:56:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2024-11-16 02:56:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 02:56:05,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:05,171 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:05,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:56:05,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:05,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:05,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -533051188, now seen corresponding path program 2 times [2024-11-16 02:56:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714074635] [2024-11-16 02:56:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714074635] [2024-11-16 02:56:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714074635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96121300] [2024-11-16 02:56:05,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:05,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:05,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:05,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:56:05,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:05,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:05,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:56:05,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:05,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96121300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:05,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:56:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740230536] [2024-11-16 02:56:05,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:05,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:56:05,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:56:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:56:05,693 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2024-11-16 02:56:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:05,783 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-11-16 02:56:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:56:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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 30 [2024-11-16 02:56:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:05,784 INFO L225 Difference]: With dead ends: 71 [2024-11-16 02:56:05,784 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 02:56:05,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:56:05,786 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:05,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 02:56:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-16 02:56:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-16 02:56:05,795 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2024-11-16 02:56:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:05,795 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-16 02:56:05,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2024-11-16 02:56:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-16 02:56:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:56:05,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:05,796 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:05,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:56:05,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:56:05,997 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:05,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1780763054, now seen corresponding path program 6 times [2024-11-16 02:56:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805269074] [2024-11-16 02:56:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805269074] [2024-11-16 02:56:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805269074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755500531] [2024-11-16 02:56:06,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:06,557 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:06,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:56:06,641 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:56:06,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:06,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 02:56:06,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:06,650 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 [2024-11-16 02:56:06,725 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 [2024-11-16 02:56:06,819 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 [2024-11-16 02:56:06,955 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 [2024-11-16 02:56:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:07,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:07,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:07,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2024-11-16 02:56:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755500531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:07,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 39 [2024-11-16 02:56:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158057010] [2024-11-16 02:56:07,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:07,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 02:56:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:07,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 02:56:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1338, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:56:07,573 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:08,512 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-11-16 02:56:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-16 02:56:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 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 [2024-11-16 02:56:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:08,513 INFO L225 Difference]: With dead ends: 73 [2024-11-16 02:56:08,513 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 02:56:08,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=399, Invalid=3261, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:56:08,515 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:08,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 242 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:56:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 02:56:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2024-11-16 02:56:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-16 02:56:08,522 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 32 [2024-11-16 02:56:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:08,522 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-16 02:56:08,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-16 02:56:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:56:08,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:08,523 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:08,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:08,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:08,728 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:08,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -771393907, now seen corresponding path program 3 times [2024-11-16 02:56:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234502643] [2024-11-16 02:56:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:08,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234502643] [2024-11-16 02:56:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234502643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573321778] [2024-11-16 02:56:08,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:08,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:08,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:08,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:08,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:56:09,040 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:56:09,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:09,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:56:09,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:09,048 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 [2024-11-16 02:56:09,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:09,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-16 02:56:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:56:09,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:56:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573321778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:09,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:09,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 16 [2024-11-16 02:56:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819621405] [2024-11-16 02:56:09,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:09,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 02:56:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 02:56:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:56:09,236 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2024-11-16 02:56:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:09,488 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2024-11-16 02:56:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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 32 [2024-11-16 02:56:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:09,489 INFO L225 Difference]: With dead ends: 59 [2024-11-16 02:56:09,489 INFO L226 Difference]: Without dead ends: 54 [2024-11-16 02:56:09,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:56:09,490 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:09,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-16 02:56:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-16 02:56:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-16 02:56:09,500 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 32 [2024-11-16 02:56:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:09,500 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-16 02:56:09,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2024-11-16 02:56:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-16 02:56:09,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:56:09,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:09,505 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:09,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:56:09,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 02:56:09,705 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:09,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2019827339, now seen corresponding path program 4 times [2024-11-16 02:56:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347520652] [2024-11-16 02:56:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:09,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347520652] [2024-11-16 02:56:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347520652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71984072] [2024-11-16 02:56:09,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:09,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:09,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:09,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:09,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:56:09,912 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:09,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:09,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:56:09,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:09,918 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 16 treesize of output 12 [2024-11-16 02:56:09,936 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 28 treesize of output 27 [2024-11-16 02:56:10,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:10,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 02:56:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:10,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71984072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:10,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2024-11-16 02:56:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259773876] [2024-11-16 02:56:10,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:10,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 02:56:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 02:56:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:56:10,241 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:11,330 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2024-11-16 02:56:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-16 02:56:11,331 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 02:56:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:11,331 INFO L225 Difference]: With dead ends: 82 [2024-11-16 02:56:11,331 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 02:56:11,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2766, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:56:11,333 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 100 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:11,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 130 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 02:56:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2024-11-16 02:56:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 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) [2024-11-16 02:56:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-16 02:56:11,341 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 36 [2024-11-16 02:56:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:11,341 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-16 02:56:11,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-16 02:56:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:56:11,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:11,343 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:11,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:11,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:56:11,547 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:11,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -487307254, now seen corresponding path program 5 times [2024-11-16 02:56:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998748680] [2024-11-16 02:56:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998748680] [2024-11-16 02:56:11,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998748680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919976131] [2024-11-16 02:56:11,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:11,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:11,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:11,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:11,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:56:11,779 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 02:56:11,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:11,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:56:11,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:11,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919976131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:11,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 02:56:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187545487] [2024-11-16 02:56:11,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:11,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:56:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:56:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:56:11,973 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:12,093 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2024-11-16 02:56:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:56:12,094 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 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 42 [2024-11-16 02:56:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:12,094 INFO L225 Difference]: With dead ends: 122 [2024-11-16 02:56:12,095 INFO L226 Difference]: Without dead ends: 73 [2024-11-16 02:56:12,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:56:12,095 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:12,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 80 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-16 02:56:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2024-11-16 02:56:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 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) [2024-11-16 02:56:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-16 02:56:12,104 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 42 [2024-11-16 02:56:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:12,104 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-16 02:56:12,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-16 02:56:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:56:12,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:12,105 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:12,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:12,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:56:12,306 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:12,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1428937803, now seen corresponding path program 6 times [2024-11-16 02:56:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:12,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386223341] [2024-11-16 02:56:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:12,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386223341] [2024-11-16 02:56:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386223341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177166138] [2024-11-16 02:56:12,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:12,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:12,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:12,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:56:12,843 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 02:56:12,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:12,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 02:56:12,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:12,906 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 [2024-11-16 02:56:12,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:12,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-16 02:56:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:13,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:13,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-16 02:56:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:17,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:17,570 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 [2024-11-16 02:56:17,573 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 [2024-11-16 02:56:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 34 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177166138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:17,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 33 [2024-11-16 02:56:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094887372] [2024-11-16 02:56:17,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:17,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:56:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:56:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=913, Unknown=1, NotChecked=0, Total=1056 [2024-11-16 02:56:17,627 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:21,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:56:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:22,186 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2024-11-16 02:56:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:56:22,187 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 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 44 [2024-11-16 02:56:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:22,188 INFO L225 Difference]: With dead ends: 75 [2024-11-16 02:56:22,188 INFO L226 Difference]: Without dead ends: 59 [2024-11-16 02:56:22,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=276, Invalid=1445, Unknown=1, NotChecked=0, Total=1722 [2024-11-16 02:56:22,189 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 71 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:22,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 327 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 513 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-16 02:56:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-16 02:56:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2024-11-16 02:56:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-16 02:56:22,203 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 44 [2024-11-16 02:56:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:22,204 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-16 02:56:22,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-16 02:56:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:56:22,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:22,205 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:22,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:56:22,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 02:56:22,410 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:22,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1942651703, now seen corresponding path program 7 times [2024-11-16 02:56:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:22,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810683501] [2024-11-16 02:56:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810683501] [2024-11-16 02:56:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810683501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521850205] [2024-11-16 02:56:22,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:56:22,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:22,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:22,656 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:22,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:56:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:22,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:56:22,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:22,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521850205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:23,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:23,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:56:23,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416876566] [2024-11-16 02:56:23,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:23,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:56:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:56:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:56:23,047 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:23,207 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2024-11-16 02:56:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:56:23,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 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 48 [2024-11-16 02:56:23,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:23,208 INFO L225 Difference]: With dead ends: 132 [2024-11-16 02:56:23,209 INFO L226 Difference]: Without dead ends: 79 [2024-11-16 02:56:23,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:56:23,210 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 103 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:23,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 75 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:56:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-16 02:56:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2024-11-16 02:56:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-16 02:56:23,223 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 48 [2024-11-16 02:56:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:23,224 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-16 02:56:23,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-16 02:56:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:56:23,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:23,225 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:23,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 02:56:23,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:23,425 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:23,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1042080694, now seen corresponding path program 8 times [2024-11-16 02:56:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551122134] [2024-11-16 02:56:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:23,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551122134] [2024-11-16 02:56:23,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551122134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675247301] [2024-11-16 02:56:23,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:56:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:23,877 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:23,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:56:23,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:56:23,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:23,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:56:23,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:24,004 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 [2024-11-16 02:56:24,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:24,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-16 02:56:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:24,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:24,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:24,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:24,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-16 02:56:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:56:27,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:27,651 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 [2024-11-16 02:56:27,654 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 [2024-11-16 02:56:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 45 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675247301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:27,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:27,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 31 [2024-11-16 02:56:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912322633] [2024-11-16 02:56:27,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:27,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:56:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:56:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:56:27,727 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:27,982 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2024-11-16 02:56:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:56:27,983 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 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 50 [2024-11-16 02:56:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:27,983 INFO L225 Difference]: With dead ends: 72 [2024-11-16 02:56:27,983 INFO L226 Difference]: Without dead ends: 56 [2024-11-16 02:56:27,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:56:27,984 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:27,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 267 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-16 02:56:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-16 02:56:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 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) [2024-11-16 02:56:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-16 02:56:27,996 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2024-11-16 02:56:27,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:27,996 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-16 02:56:27,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-16 02:56:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:56:27,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:27,998 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:28,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:28,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:56:28,202 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:28,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1262396744, now seen corresponding path program 9 times [2024-11-16 02:56:28,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:28,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380978165] [2024-11-16 02:56:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:28,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380978165] [2024-11-16 02:56:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380978165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292686340] [2024-11-16 02:56:28,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:56:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:28,428 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:28,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:56:28,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:56:28,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:28,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:56:28,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:28,557 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 16 treesize of output 12 [2024-11-16 02:56:28,572 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 28 [2024-11-16 02:56:28,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:28,597 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 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-16 02:56:28,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:28,761 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 48 treesize of output 43 [2024-11-16 02:56:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 02:56:28,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 02:56:29,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292686340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:29,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 34 [2024-11-16 02:56:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064420456] [2024-11-16 02:56:29,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:29,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 02:56:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 02:56:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:56:29,123 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:32,128 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2024-11-16 02:56:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-16 02:56:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 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 54 [2024-11-16 02:56:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:32,129 INFO L225 Difference]: With dead ends: 136 [2024-11-16 02:56:32,129 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 02:56:32,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2995 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1577, Invalid=8125, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 02:56:32,131 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:32,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 232 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:56:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 02:56:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 61. [2024-11-16 02:56:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-11-16 02:56:32,147 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 54 [2024-11-16 02:56:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:32,148 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-11-16 02:56:32,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-11-16 02:56:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 02:56:32,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:32,149 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:32,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 02:56:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:56:32,353 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 324168199, now seen corresponding path program 10 times [2024-11-16 02:56:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257203785] [2024-11-16 02:56:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 102 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:32,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257203785] [2024-11-16 02:56:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257203785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701820462] [2024-11-16 02:56:32,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:56:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:32,606 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:32,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:56:32,691 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:56:32,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:32,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 02:56:32,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:32,697 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 16 treesize of output 12 [2024-11-16 02:56:32,711 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 28 [2024-11-16 02:56:32,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:32,735 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 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-16 02:56:32,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:32,769 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 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-16 02:56:33,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:33,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 48 [2024-11-16 02:56:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 38 proven. 134 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:33,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 32 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:56:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701820462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:33,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:33,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2024-11-16 02:56:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829876258] [2024-11-16 02:56:33,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:33,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 02:56:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 02:56:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2347, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 02:56:33,930 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:48,635 INFO L93 Difference]: Finished difference Result 397 states and 461 transitions. [2024-11-16 02:56:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-11-16 02:56:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 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 60 [2024-11-16 02:56:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:48,637 INFO L225 Difference]: With dead ends: 397 [2024-11-16 02:56:48,637 INFO L226 Difference]: Without dead ends: 332 [2024-11-16 02:56:48,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27528 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=8611, Invalid=61879, Unknown=0, NotChecked=0, Total=70490 [2024-11-16 02:56:48,646 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 287 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:48,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 504 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:56:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-16 02:56:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 67. [2024-11-16 02:56:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-11-16 02:56:48,669 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 60 [2024-11-16 02:56:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:48,669 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-11-16 02:56:48,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.849056603773585) internal successors, (151), 53 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-11-16 02:56:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 02:56:48,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:48,670 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:48,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 02:56:48,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:48,871 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:48,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash -52477306, now seen corresponding path program 11 times [2024-11-16 02:56:48,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:48,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274290406] [2024-11-16 02:56:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 132 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:49,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:49,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274290406] [2024-11-16 02:56:49,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274290406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:49,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887943055] [2024-11-16 02:56:49,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:56:49,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:49,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:49,178 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:56:49,420 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-16 02:56:49,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:49,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 02:56:49,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:49,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:56:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:49,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887943055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:56:49,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:56:49,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-16 02:56:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106792992] [2024-11-16 02:56:49,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:56:49,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 02:56:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:56:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 02:56:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:56:49,828 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:56:50,099 INFO L93 Difference]: Finished difference Result 234 states and 271 transitions. [2024-11-16 02:56:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:56:50,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 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 66 [2024-11-16 02:56:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:56:50,101 INFO L225 Difference]: With dead ends: 234 [2024-11-16 02:56:50,101 INFO L226 Difference]: Without dead ends: 135 [2024-11-16 02:56:50,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 104 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 02:56:50,102 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 124 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:56:50,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 153 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:56:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-16 02:56:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 69. [2024-11-16 02:56:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 68 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) [2024-11-16 02:56:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2024-11-16 02:56:50,124 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 66 [2024-11-16 02:56:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:56:50,124 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2024-11-16 02:56:50,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:56:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2024-11-16 02:56:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:56:50,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:56:50,125 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:56:50,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 02:56:50,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:50,326 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:56:50,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:56:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1994286023, now seen corresponding path program 12 times [2024-11-16 02:56:50,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:56:50,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661030388] [2024-11-16 02:56:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:56:50,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:56:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:56:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 56 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:56:51,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:56:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661030388] [2024-11-16 02:56:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661030388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:56:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159195622] [2024-11-16 02:56:51,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:56:51,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:56:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:56:51,137 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:56:51,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:56:51,414 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-16 02:56:51,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:56:51,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-16 02:56:51,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:56:51,514 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 [2024-11-16 02:56:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:51,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-16 02:56:51,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:51,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:51,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:51,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:56:51,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-16 02:56:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:56:52,860 INFO L349 Elim1Store]: treesize reduction 52, result has 33.3 percent of original size [2024-11-16 02:56:52,860 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 6 case distinctions, treesize of input 39 treesize of output 44 [2024-11-16 02:57:00,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:00,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:00,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:57:00,839 INFO L349 Elim1Store]: treesize reduction 94, result has 27.1 percent of original size [2024-11-16 02:57:00,839 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 10 case distinctions, treesize of input 48 treesize of output 56 [2024-11-16 02:57:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 96 proven. 118 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 02:57:21,571 INFO L311 TraceCheckSpWp]: Computing backward predicates...