./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s12if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/s12if.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 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:27:16,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:27:16,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:27:16,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:27:16,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:27:16,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:27:17,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:27:17,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:27:17,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:27:17,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:27:17,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:27:17,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:27:17,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:27:17,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:27:17,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:27:17,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:27:17,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:27:17,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:27:17,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:27:17,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:27:17,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:27:17,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:27:17,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:27:17,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:27:17,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:27:17,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:27:17,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:27:17,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:27:17,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:27:17,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:27:17,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:27:17,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:27:17,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:27:17,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:27:17,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:27:17,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:27:17,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:27:17,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:27:17,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:27:17,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:27:17,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:27:17,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:27:17,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 [2024-11-09 18:27:17,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:27:17,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:27:17,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:27:17,314 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:27:17,315 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:27:17,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s12if.c [2024-11-09 18:27:18,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:27:18,998 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:27:18,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s12if.c [2024-11-09 18:27:19,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f358a40/e7df1bc43994406d9b43a303e16a792a/FLAGd0eb12551 [2024-11-09 18:27:19,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f358a40/e7df1bc43994406d9b43a303e16a792a [2024-11-09 18:27:19,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:27:19,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:27:19,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:27:19,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:27:19,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:27:19,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165bc815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19, skipping insertion in model container [2024-11-09 18:27:19,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:27:19,291 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/s12if.c[588,601] [2024-11-09 18:27:19,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:27:19,334 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:27:19,348 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/s12if.c[588,601] [2024-11-09 18:27:19,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:27:19,385 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:27:19,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19 WrapperNode [2024-11-09 18:27:19,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:27:19,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:27:19,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:27:19,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:27:19,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,434 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-09 18:27:19,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:27:19,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:27:19,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:27:19,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:27:19,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,474 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 6, 9]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2024-11-09 18:27:19,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:27:19,496 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:27:19,496 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:27:19,496 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:27:19,497 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (1/1) ... [2024-11-09 18:27:19,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:27:19,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:19,538 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) [2024-11-09 18:27:19,541 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 [2024-11-09 18:27:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:27:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:27:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:27:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:27:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:27:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:27:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:27:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:27:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:27:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:27:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:27:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:27:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:27:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:27:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:27:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:27:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:27:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:27:19,684 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:27:19,686 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:27:19,869 INFO L1247 $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; [2024-11-09 18:27:19,884 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 18:27:19,884 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:27:19,901 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:27:19,901 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:27:19,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:27:19 BoogieIcfgContainer [2024-11-09 18:27:19,902 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:27:19,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:27:19,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:27:19,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:27:19,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:27:19" (1/3) ... [2024-11-09 18:27:19,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760dac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:27:19, skipping insertion in model container [2024-11-09 18:27:19,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:19" (2/3) ... [2024-11-09 18:27:19,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760dac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:27:19, skipping insertion in model container [2024-11-09 18:27:19,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:27:19" (3/3) ... [2024-11-09 18:27:19,912 INFO L112 eAbstractionObserver]: Analyzing ICFG s12if.c [2024-11-09 18:27:19,931 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:27:19,932 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:27:19,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:27:20,008 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;@6913e06e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:27:20,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:27:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 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) [2024-11-09 18:27:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:27:20,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:20,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:20,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:20,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1088486860, now seen corresponding path program 1 times [2024-11-09 18:27:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63714039] [2024-11-09 18:27:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63714039] [2024-11-09 18:27:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63714039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:27:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:27:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:27:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989824992] [2024-11-09 18:27:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:27:20,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:27:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:27:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:27:20,229 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2024-11-09 18:27:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:20,242 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-09 18:27:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:27:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 [2024-11-09 18:27:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:20,250 INFO L225 Difference]: With dead ends: 49 [2024-11-09 18:27:20,250 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:27:20,252 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 [2024-11-09 18:27:20,256 INFO L432 NwaCegarLoop]: 31 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, 31 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 [2024-11-09 18:27:20,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:27:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:27:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:27:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-09 18:27:20,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2024-11-09 18:27:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:20,289 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-09 18:27:20,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2024-11-09 18:27:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-09 18:27:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 18:27:20,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:20,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:20,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:27:20,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:20,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash 632050842, now seen corresponding path program 1 times [2024-11-09 18:27:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:20,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107254239] [2024-11-09 18:27:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:20,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107254239] [2024-11-09 18:27:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107254239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:27:20,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:27:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:27:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99728812] [2024-11-09 18:27:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:27:20,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:27:20,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:27:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:27:20,515 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 18:27:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:20,635 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-09 18:27:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:27:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-09 18:27:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:20,640 INFO L225 Difference]: With dead ends: 47 [2024-11-09 18:27:20,641 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:27:20,641 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 [2024-11-09 18:27:20,646 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:20,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:27:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-09 18:27:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 18:27:20,655 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2024-11-09 18:27:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:20,655 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 18:27:20,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 18:27:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 18:27:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:27:20,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:20,657 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:20,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:27:20,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:20,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2142199865, now seen corresponding path program 1 times [2024-11-09 18:27:20,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:20,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573416446] [2024-11-09 18:27:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:21,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573416446] [2024-11-09 18:27:21,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573416446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:21,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793140075] [2024-11-09 18:27:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:21,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:21,387 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) [2024-11-09 18:27:21,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:27:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:21,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:27:21,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:21,572 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 [2024-11-09 18:27:21,797 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 [2024-11-09 18:27:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:21,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793140075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:22,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:22,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-09 18:27:22,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360134042] [2024-11-09 18:27:22,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:22,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:27:22,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:27:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:27:22,073 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2024-11-09 18:27:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:22,469 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2024-11-09 18:27:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:27:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 27 [2024-11-09 18:27:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:22,471 INFO L225 Difference]: With dead ends: 55 [2024-11-09 18:27:22,471 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 18:27:22,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:27:22,472 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:22,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 95 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:27:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 18:27:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-09 18:27:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2024-11-09 18:27:22,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-09 18:27:22,486 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2024-11-09 18:27:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:22,489 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-09 18:27:22,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2024-11-09 18:27:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-09 18:27:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:27:22,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:22,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:22,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:27:22,693 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 [2024-11-09 18:27:22,694 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:22,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash -409957096, now seen corresponding path program 1 times [2024-11-09 18:27:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904199096] [2024-11-09 18:27:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904199096] [2024-11-09 18:27:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904199096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122912648] [2024-11-09 18:27:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:23,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:23,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:27:23,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:27:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:23,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:27:23,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:23,152 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 [2024-11-09 18:27:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:23,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:23,279 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 27 treesize of output 23 [2024-11-09 18:27:23,290 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:27:23,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-09 18:27:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122912648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:23,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:23,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-09 18:27:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221524075] [2024-11-09 18:27:23,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:23,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:27:23,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:27:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:27:23,305 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:23,508 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-09 18:27:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:27:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:27:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:23,510 INFO L225 Difference]: With dead ends: 113 [2024-11-09 18:27:23,510 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 18:27:23,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:27:23,511 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:23,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 139 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 18:27:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2024-11-09 18:27:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-09 18:27:23,530 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2024-11-09 18:27:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:23,530 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-09 18:27:23,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-09 18:27:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:27:23,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:23,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:23,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:23,733 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 [2024-11-09 18:27:23,734 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:23,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1097594713, now seen corresponding path program 1 times [2024-11-09 18:27:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202919641] [2024-11-09 18:27:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202919641] [2024-11-09 18:27:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202919641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847871955] [2024-11-09 18:27:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:23,930 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) [2024-11-09 18:27:23,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:27:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:24,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:27:24,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:24,051 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 [2024-11-09 18:27:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:24,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:24,119 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 [2024-11-09 18:27:24,121 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 [2024-11-09 18:27:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847871955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:24,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 18:27:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657550895] [2024-11-09 18:27:24,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:24,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:27:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:27:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:27:24,135 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 18:27:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:24,219 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2024-11-09 18:27:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:27:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:27:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:24,221 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:27:24,221 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 18:27:24,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:27:24,222 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:24,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 97 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 18:27:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-09 18:27:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) [2024-11-09 18:27:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-09 18:27:24,240 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2024-11-09 18:27:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:24,240 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-09 18:27:24,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 18:27:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-09 18:27:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:27:24,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:24,241 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:24,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:27:24,442 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 [2024-11-09 18:27:24,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:24,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1727867096, now seen corresponding path program 2 times [2024-11-09 18:27:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686986230] [2024-11-09 18:27:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:24,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:24,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686986230] [2024-11-09 18:27:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686986230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:24,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775596074] [2024-11-09 18:27:24,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:27:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:24,531 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) [2024-11-09 18:27:24,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:27:24,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:27:24,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:24,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:27:24,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:24,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775596074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:24,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:24,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:27:24,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314626013] [2024-11-09 18:27:24,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:24,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:27:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:27:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:27:24,745 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:24,923 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2024-11-09 18:27:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:27:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-09 18:27:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:24,924 INFO L225 Difference]: With dead ends: 110 [2024-11-09 18:27:24,924 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 18:27:24,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:27:24,928 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:24,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 18:27:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2024-11-09 18:27:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 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) [2024-11-09 18:27:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-09 18:27:24,945 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 29 [2024-11-09 18:27:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:24,945 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-09 18:27:24,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-09 18:27:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:27:24,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:24,946 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:24,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:27:25,147 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 [2024-11-09 18:27:25,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:25,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 107565623, now seen corresponding path program 3 times [2024-11-09 18:27:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:25,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704585699] [2024-11-09 18:27:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:25,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:25,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704585699] [2024-11-09 18:27:25,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704585699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714540907] [2024-11-09 18:27:25,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:27:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:25,254 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) [2024-11-09 18:27:25,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:27:25,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:27:25,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:25,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:27:25,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:25,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714540907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:25,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:25,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:27:25,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675982889] [2024-11-09 18:27:25,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:25,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:27:25,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:25,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:27:25,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:27:25,451 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:25,541 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-09 18:27:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:27:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 18:27:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:25,542 INFO L225 Difference]: With dead ends: 100 [2024-11-09 18:27:25,542 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 18:27:25,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:27:25,544 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:25,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 57 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 18:27:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-09 18:27:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 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) [2024-11-09 18:27:25,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-09 18:27:25,582 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 31 [2024-11-09 18:27:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:25,582 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-09 18:27:25,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2024-11-09 18:27:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-09 18:27:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:27:25,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:25,583 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:25,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:27:25,783 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 [2024-11-09 18:27:25,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:25,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2130604056, now seen corresponding path program 4 times [2024-11-09 18:27:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019964179] [2024-11-09 18:27:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019964179] [2024-11-09 18:27:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019964179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875136815] [2024-11-09 18:27:26,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:27:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:26,312 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) [2024-11-09 18:27:26,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:27:26,391 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:27:26,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:26,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 18:27:26,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:26,400 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 [2024-11-09 18:27:26,559 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 [2024-11-09 18:27:26,654 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 [2024-11-09 18:27:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:26,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875136815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:27,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 32 [2024-11-09 18:27:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977383795] [2024-11-09 18:27:27,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:27,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 18:27:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 18:27:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:27:27,150 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 32 states, 32 states have (on average 2.6875) internal successors, (86), 32 states have internal predecessors, (86), 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) [2024-11-09 18:27:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:28,298 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2024-11-09 18:27:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 18:27:28,298 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.6875) internal successors, (86), 32 states have internal predecessors, (86), 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 37 [2024-11-09 18:27:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:28,301 INFO L225 Difference]: With dead ends: 148 [2024-11-09 18:27:28,301 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 18:27:28,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=2576, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:27:28,303 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 96 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:28,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 264 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:27:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 18:27:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 92. [2024-11-09 18:27:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 91 states have internal predecessors, (112), 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) [2024-11-09 18:27:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2024-11-09 18:27:28,319 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 37 [2024-11-09 18:27:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:28,319 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2024-11-09 18:27:28,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.6875) internal successors, (86), 32 states have internal predecessors, (86), 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) [2024-11-09 18:27:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2024-11-09 18:27:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:27:28,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:28,321 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:28,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:27:28,524 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 [2024-11-09 18:27:28,525 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:28,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -421552905, now seen corresponding path program 1 times [2024-11-09 18:27:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35764813] [2024-11-09 18:27:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:28,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:27:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35764813] [2024-11-09 18:27:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35764813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876065361] [2024-11-09 18:27:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:28,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:28,844 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) [2024-11-09 18:27:28,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:27:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:28,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:27:28,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:29,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:27:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:27:29,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:29,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:27:29,148 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:27:29,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-09 18:27:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:27:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876065361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:29,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-09 18:27:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176527361] [2024-11-09 18:27:29,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:29,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:27:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:27:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:27:29,179 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-09 18:27:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:29,444 INFO L93 Difference]: Finished difference Result 143 states and 174 transitions. [2024-11-09 18:27:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:27:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) Word has length 37 [2024-11-09 18:27:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:29,446 INFO L225 Difference]: With dead ends: 143 [2024-11-09 18:27:29,446 INFO L226 Difference]: Without dead ends: 134 [2024-11-09 18:27:29,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:27:29,448 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 87 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:29,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 205 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:27:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-09 18:27:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2024-11-09 18:27:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 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) [2024-11-09 18:27:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-11-09 18:27:29,465 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 37 [2024-11-09 18:27:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:29,465 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-11-09 18:27:29,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 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) [2024-11-09 18:27:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-11-09 18:27:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:27:29,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:29,467 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:29,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:27:29,667 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 [2024-11-09 18:27:29,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:29,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1266024776, now seen corresponding path program 1 times [2024-11-09 18:27:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:29,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580899229] [2024-11-09 18:27:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580899229] [2024-11-09 18:27:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580899229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349507259] [2024-11-09 18:27:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:29,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:29,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:29,968 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) [2024-11-09 18:27:29,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:27:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:30,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:27:30,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:30,071 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 [2024-11-09 18:27:30,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:27:30,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-09 18:27:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:30,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:30,199 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 [2024-11-09 18:27:30,201 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 [2024-11-09 18:27:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349507259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:30,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:30,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 18:27:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140404798] [2024-11-09 18:27:30,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:30,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:27:30,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:27:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:27:30,225 INFO L87 Difference]: Start difference. First operand 100 states and 120 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) [2024-11-09 18:27:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:30,374 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2024-11-09 18:27:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:27:30,375 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 37 [2024-11-09 18:27:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:30,375 INFO L225 Difference]: With dead ends: 154 [2024-11-09 18:27:30,376 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 18:27:30,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:27:30,377 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:30,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 18:27:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2024-11-09 18:27:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 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) [2024-11-09 18:27:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-09 18:27:30,391 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 37 [2024-11-09 18:27:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:30,392 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-09 18:27:30,392 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) [2024-11-09 18:27:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-09 18:27:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:27:30,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:30,393 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:30,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:27:30,597 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 [2024-11-09 18:27:30,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:30,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1512088938, now seen corresponding path program 5 times [2024-11-09 18:27:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:30,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363695202] [2024-11-09 18:27:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:30,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363695202] [2024-11-09 18:27:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363695202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351678799] [2024-11-09 18:27:30,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:27:30,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:30,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:30,710 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) [2024-11-09 18:27:30,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:27:30,793 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:27:30,793 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:30,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:27:30,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:30,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:27:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351678799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:30,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:30,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:27:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067760193] [2024-11-09 18:27:30,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:27:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:27:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:27:30,972 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) [2024-11-09 18:27:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:31,111 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-11-09 18:27:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:27:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 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 41 [2024-11-09 18:27:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:31,113 INFO L225 Difference]: With dead ends: 138 [2024-11-09 18:27:31,113 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 18:27:31,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:27:31,114 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:31,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 18:27:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2024-11-09 18:27:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 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) [2024-11-09 18:27:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-11-09 18:27:31,122 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 41 [2024-11-09 18:27:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:31,122 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-11-09 18:27:31,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 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) [2024-11-09 18:27:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-11-09 18:27:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:27:31,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:31,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:31,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:27:31,324 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 [2024-11-09 18:27:31,325 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:31,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1232060985, now seen corresponding path program 6 times [2024-11-09 18:27:31,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:31,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448361032] [2024-11-09 18:27:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448361032] [2024-11-09 18:27:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448361032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158617893] [2024-11-09 18:27:31,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:27:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:31,443 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) [2024-11-09 18:27:31,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:27:31,535 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:27:31,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:31,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:27:31,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:31,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:31,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158617893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:31,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:31,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:27:31,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137649829] [2024-11-09 18:27:31,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:31,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:27:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:31,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:27:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:27:31,722 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2024-11-09 18:27:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:31,872 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-09 18:27:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:27:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:27:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:31,874 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:27:31,874 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:27:31,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:27:31,874 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:31,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 91 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:27:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-09 18:27:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:27:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-09 18:27:31,888 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 43 [2024-11-09 18:27:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:31,889 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-09 18:27:31,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2024-11-09 18:27:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-09 18:27:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:27:31,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:31,890 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:31,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:27:32,090 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 [2024-11-09 18:27:32,090 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:32,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1428730935, now seen corresponding path program 7 times [2024-11-09 18:27:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625836345] [2024-11-09 18:27:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625836345] [2024-11-09 18:27:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625836345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494204388] [2024-11-09 18:27:32,779 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:27:32,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:32,781 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) [2024-11-09 18:27:32,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:27:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:32,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 18:27:32,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:32,879 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 [2024-11-09 18:27:33,042 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 [2024-11-09 18:27:33,145 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 [2024-11-09 18:27:33,257 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 [2024-11-09 18:27:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:33,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:33,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494204388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:33,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 36 [2024-11-09 18:27:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53104378] [2024-11-09 18:27:33,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:33,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 18:27:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 18:27:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:27:33,779 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 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) [2024-11-09 18:27:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:35,072 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2024-11-09 18:27:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 18:27:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 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 47 [2024-11-09 18:27:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:35,074 INFO L225 Difference]: With dead ends: 161 [2024-11-09 18:27:35,074 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 18:27:35,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=412, Invalid=3248, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 18:27:35,076 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:35,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 413 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:27:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 18:27:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2024-11-09 18:27:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 126 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) [2024-11-09 18:27:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2024-11-09 18:27:35,099 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 47 [2024-11-09 18:27:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:35,100 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2024-11-09 18:27:35,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 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) [2024-11-09 18:27:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2024-11-09 18:27:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:27:35,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:35,101 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:35,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:35,301 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 [2024-11-09 18:27:35,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:35,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1123426026, now seen corresponding path program 2 times [2024-11-09 18:27:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93917231] [2024-11-09 18:27:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93917231] [2024-11-09 18:27:35,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93917231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691224467] [2024-11-09 18:27:35,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:27:35,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:35,696 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) [2024-11-09 18:27:35,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:27:35,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:27:35,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:35,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 18:27:35,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:35,853 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 [2024-11-09 18:27:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:27:35,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:36,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 18:27:36,048 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 18:27:36,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-09 18:27:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691224467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:36,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 22 [2024-11-09 18:27:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100665172] [2024-11-09 18:27:36,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:36,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 18:27:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 18:27:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-09 18:27:36,099 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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) [2024-11-09 18:27:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:36,519 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2024-11-09 18:27:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:27:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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 47 [2024-11-09 18:27:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:36,521 INFO L225 Difference]: With dead ends: 181 [2024-11-09 18:27:36,521 INFO L226 Difference]: Without dead ends: 172 [2024-11-09 18:27:36,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:27:36,522 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:36,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 392 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:27:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-09 18:27:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 135. [2024-11-09 18:27:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 134 states have internal predecessors, (159), 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) [2024-11-09 18:27:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2024-11-09 18:27:36,539 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 47 [2024-11-09 18:27:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:36,540 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2024-11-09 18:27:36,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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) [2024-11-09 18:27:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2024-11-09 18:27:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:27:36,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:36,541 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:36,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:36,741 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 [2024-11-09 18:27:36,741 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:36,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:36,742 INFO L85 PathProgramCache]: Analyzing trace with hash 121338455, now seen corresponding path program 2 times [2024-11-09 18:27:36,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:36,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729297389] [2024-11-09 18:27:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:36,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:37,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729297389] [2024-11-09 18:27:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729297389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504011823] [2024-11-09 18:27:37,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:27:37,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:37,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:37,046 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) [2024-11-09 18:27:37,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:27:37,138 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:27:37,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:37,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 18:27:37,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:37,195 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 [2024-11-09 18:27:37,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:27:37,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-09 18:27:37,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:27:37,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-09 18:27:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:37,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:37,401 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 [2024-11-09 18:27:37,405 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 [2024-11-09 18:27:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504011823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:37,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:37,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-09 18:27:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101310041] [2024-11-09 18:27:37,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:37,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:27:37,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:27:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:27:37,419 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 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) [2024-11-09 18:27:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:37,618 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-09 18:27:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:27:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 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) Word has length 47 [2024-11-09 18:27:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:37,620 INFO L225 Difference]: With dead ends: 213 [2024-11-09 18:27:37,620 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 18:27:37,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:27:37,621 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:37,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 200 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:27:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 18:27:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2024-11-09 18:27:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 136 states have internal predecessors, (161), 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) [2024-11-09 18:27:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2024-11-09 18:27:37,641 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 47 [2024-11-09 18:27:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:37,642 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2024-11-09 18:27:37,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 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) [2024-11-09 18:27:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2024-11-09 18:27:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 18:27:37,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:37,643 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:37,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:27:37,846 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 [2024-11-09 18:27:37,846 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:37,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -423430314, now seen corresponding path program 8 times [2024-11-09 18:27:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305270904] [2024-11-09 18:27:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305270904] [2024-11-09 18:27:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305270904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018638280] [2024-11-09 18:27:37,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:27:37,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:37,989 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) [2024-11-09 18:27:37,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:27:38,084 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:27:38,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:38,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:27:38,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:38,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018638280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:38,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:27:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082305120] [2024-11-09 18:27:38,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:38,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:27:38,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:27:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:27:38,282 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2024-11-09 18:27:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:38,597 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2024-11-09 18:27:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:27:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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 49 [2024-11-09 18:27:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:38,600 INFO L225 Difference]: With dead ends: 201 [2024-11-09 18:27:38,600 INFO L226 Difference]: Without dead ends: 177 [2024-11-09 18:27:38,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:27:38,604 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:38,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 187 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:27:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-09 18:27:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2024-11-09 18:27:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.185483870967742) internal successors, (147), 124 states have internal predecessors, (147), 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) [2024-11-09 18:27:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-09 18:27:38,628 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 49 [2024-11-09 18:27:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:38,629 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-09 18:27:38,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2024-11-09 18:27:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-09 18:27:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:27:38,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:38,630 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:38,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:27:38,831 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 [2024-11-09 18:27:38,831 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:38,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash 385644341, now seen corresponding path program 9 times [2024-11-09 18:27:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542592728] [2024-11-09 18:27:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:27:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542592728] [2024-11-09 18:27:38,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542592728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890111506] [2024-11-09 18:27:38,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:27:38,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:38,985 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) [2024-11-09 18:27:38,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:27:39,110 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:27:39,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:39,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:27:39,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:39,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:27:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890111506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:39,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:39,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:27:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57640796] [2024-11-09 18:27:39,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:39,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:27:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:27:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:27:39,295 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-11-09 18:27:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:39,464 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2024-11-09 18:27:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:27:39,464 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 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 51 [2024-11-09 18:27:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:39,465 INFO L225 Difference]: With dead ends: 180 [2024-11-09 18:27:39,465 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 18:27:39,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:27:39,466 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 61 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:39,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 99 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 18:27:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-09 18:27:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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) [2024-11-09 18:27:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-09 18:27:39,476 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 51 [2024-11-09 18:27:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:39,476 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-09 18:27:39,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-11-09 18:27:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-09 18:27:39,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:27:39,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:39,477 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:39,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:27:39,677 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 [2024-11-09 18:27:39,678 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:39,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 398548118, now seen corresponding path program 10 times [2024-11-09 18:27:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202103434] [2024-11-09 18:27:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:27:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202103434] [2024-11-09 18:27:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202103434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60632943] [2024-11-09 18:27:40,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:27:40,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:40,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:40,546 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) [2024-11-09 18:27:40,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:27:40,642 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:27:40,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:40,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 18:27:40,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:40,658 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 [2024-11-09 18:27:41,046 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 [2024-11-09 18:27:41,133 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 [2024-11-09 18:27:41,268 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 [2024-11-09 18:27:41,380 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 [2024-11-09 18:27:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:41,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60632943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:42,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 60 [2024-11-09 18:27:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148155207] [2024-11-09 18:27:42,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:42,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-09 18:27:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:42,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-09 18:27:42,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=3229, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 18:27:42,432 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 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) [2024-11-09 18:27:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:45,742 INFO L93 Difference]: Finished difference Result 253 states and 304 transitions. [2024-11-09 18:27:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-09 18:27:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 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 57 [2024-11-09 18:27:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:45,744 INFO L225 Difference]: With dead ends: 253 [2024-11-09 18:27:45,744 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 18:27:45,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4203 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1399, Invalid=12643, Unknown=0, NotChecked=0, Total=14042 [2024-11-09 18:27:45,748 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 194 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:45,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 842 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 18:27:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 18:27:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 160. [2024-11-09 18:27:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 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) [2024-11-09 18:27:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2024-11-09 18:27:45,771 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 57 [2024-11-09 18:27:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:45,771 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2024-11-09 18:27:45,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.3666666666666667) internal successors, (142), 60 states have internal predecessors, (142), 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) [2024-11-09 18:27:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2024-11-09 18:27:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:27:45,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:45,772 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:45,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 18:27:45,972 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 [2024-11-09 18:27:45,973 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:45,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2141358453, now seen corresponding path program 3 times [2024-11-09 18:27:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:45,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42767763] [2024-11-09 18:27:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:45,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:27:46,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42767763] [2024-11-09 18:27:46,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42767763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:46,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340897628] [2024-11-09 18:27:46,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:27:46,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:46,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:46,520 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) [2024-11-09 18:27:46,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:27:46,624 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:27:46,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:46,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:27:46,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:46,657 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 27 treesize of output 15 [2024-11-09 18:27:46,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:27:46,776 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 [2024-11-09 18:27:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:27:46,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:27:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340897628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:47,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 31 [2024-11-09 18:27:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617807901] [2024-11-09 18:27:47,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:47,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:27:47,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:27:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:27:47,104 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-09 18:27:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:48,588 INFO L93 Difference]: Finished difference Result 294 states and 351 transitions. [2024-11-09 18:27:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 18:27:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 57 [2024-11-09 18:27:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:48,590 INFO L225 Difference]: With dead ends: 294 [2024-11-09 18:27:48,590 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 18:27:48,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1035, Invalid=4665, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 18:27:48,592 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 317 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:48,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 352 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:27:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 18:27:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 225. [2024-11-09 18:27:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.1919642857142858) internal successors, (267), 224 states have internal predecessors, (267), 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) [2024-11-09 18:27:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2024-11-09 18:27:48,625 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 57 [2024-11-09 18:27:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:48,626 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2024-11-09 18:27:48,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-09 18:27:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2024-11-09 18:27:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:27:48,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:48,627 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:48,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:48,827 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 [2024-11-09 18:27:48,828 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:48,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1191994826, now seen corresponding path program 3 times [2024-11-09 18:27:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068416725] [2024-11-09 18:27:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:27:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068416725] [2024-11-09 18:27:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068416725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:49,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171387269] [2024-11-09 18:27:49,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:27:49,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:49,291 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) [2024-11-09 18:27:49,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:27:49,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:27:49,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:49,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 18:27:49,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:49,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 18:27:49,653 INFO L349 Elim1Store]: treesize reduction 18, result has 57.1 percent of original size [2024-11-09 18:27:49,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2024-11-09 18:27:49,771 INFO L349 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2024-11-09 18:27:49,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 55 [2024-11-09 18:27:49,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:27:49,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:27:49,944 INFO L349 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2024-11-09 18:27:49,944 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 7 case distinctions, treesize of input 66 treesize of output 81 [2024-11-09 18:27:50,256 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2024-11-09 18:27:50,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 36 [2024-11-09 18:27:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:27:50,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:27:50,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171387269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:50,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:50,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 11] total 34 [2024-11-09 18:27:50,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109941953] [2024-11-09 18:27:50,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:50,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 18:27:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 18:27:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 18:27:50,714 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 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) [2024-11-09 18:27:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:51,747 INFO L93 Difference]: Finished difference Result 318 states and 384 transitions. [2024-11-09 18:27:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 18:27:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 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 57 [2024-11-09 18:27:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:51,749 INFO L225 Difference]: With dead ends: 318 [2024-11-09 18:27:51,749 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 18:27:51,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=520, Invalid=2902, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:27:51,750 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 60 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:51,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 295 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:27:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 18:27:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2024-11-09 18:27:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.146341463414634) internal successors, (188), 164 states have internal predecessors, (188), 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) [2024-11-09 18:27:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2024-11-09 18:27:51,779 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 57 [2024-11-09 18:27:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:51,779 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2024-11-09 18:27:51,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 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) [2024-11-09 18:27:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2024-11-09 18:27:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:27:51,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:51,780 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:51,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:51,980 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 [2024-11-09 18:27:51,981 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:51,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash 305911828, now seen corresponding path program 11 times [2024-11-09 18:27:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479147632] [2024-11-09 18:27:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:27:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479147632] [2024-11-09 18:27:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479147632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066259964] [2024-11-09 18:27:52,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:27:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:52,162 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) [2024-11-09 18:27:52,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:27:52,376 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:27:52,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:52,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:27:52,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:27:52,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:27:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066259964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:52,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:27:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258641448] [2024-11-09 18:27:52,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:52,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:27:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:27:52,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:27:52,669 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 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) [2024-11-09 18:27:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:52,867 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2024-11-09 18:27:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:27:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 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 61 [2024-11-09 18:27:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:52,868 INFO L225 Difference]: With dead ends: 224 [2024-11-09 18:27:52,868 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 18:27:52,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:27:52,869 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:52,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 117 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 18:27:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 87. [2024-11-09 18:27:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 86 states have internal predecessors, (96), 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) [2024-11-09 18:27:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-09 18:27:52,882 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 61 [2024-11-09 18:27:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:52,882 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-09 18:27:52,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 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) [2024-11-09 18:27:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-09 18:27:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:27:52,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:52,884 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 18:27:53,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:53,085 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:53,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1939024329, now seen corresponding path program 12 times [2024-11-09 18:27:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213115994] [2024-11-09 18:27:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:27:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213115994] [2024-11-09 18:27:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213115994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394168386] [2024-11-09 18:27:53,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:27:53,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:53,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:53,260 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:27:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:27:53,412 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:27:53,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:27:53,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:27:53,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 38 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:27:53,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 60 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:27:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394168386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:53,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:53,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 24 [2024-11-09 18:27:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382199920] [2024-11-09 18:27:53,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:53,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:27:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:27:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:27:53,709 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 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) [2024-11-09 18:27:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:27:53,879 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-09 18:27:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:27:53,880 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 18:27:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:27:53,880 INFO L225 Difference]: With dead ends: 108 [2024-11-09 18:27:53,880 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 18:27:53,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:27:53,882 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 149 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:27:53,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 118 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:27:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 18:27:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2024-11-09 18:27:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 90 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) [2024-11-09 18:27:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2024-11-09 18:27:53,894 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 63 [2024-11-09 18:27:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:27:53,894 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2024-11-09 18:27:53,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 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) [2024-11-09 18:27:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2024-11-09 18:27:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:27:53,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:27:53,895 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:27:53,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 18:27:54,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 18:27:54,096 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:27:54,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:27:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -346056395, now seen corresponding path program 13 times [2024-11-09 18:27:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:27:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695044797] [2024-11-09 18:27:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:27:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:27:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:27:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:27:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695044797] [2024-11-09 18:27:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695044797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:27:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421930887] [2024-11-09 18:27:55,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:27:55,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:27:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:27:55,020 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:27:55,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:27:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:27:55,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 18:27:55,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:27:55,140 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 [2024-11-09 18:27:55,295 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 [2024-11-09 18:27:55,393 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 [2024-11-09 18:27:55,513 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 [2024-11-09 18:27:55,622 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 [2024-11-09 18:27:55,762 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 [2024-11-09 18:27:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:27:55,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:27:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:27:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421930887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:27:56,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:27:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 52 [2024-11-09 18:27:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79607325] [2024-11-09 18:27:56,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:27:56,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 18:27:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:27:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 18:27:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2475, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 18:27:56,662 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 52 states have internal predecessors, (114), 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) [2024-11-09 18:28:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:00,320 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2024-11-09 18:28:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-09 18:28:00,321 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 52 states have internal predecessors, (114), 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 67 [2024-11-09 18:28:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:00,322 INFO L225 Difference]: With dead ends: 267 [2024-11-09 18:28:00,322 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 18:28:00,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=770, Invalid=10572, Unknown=0, NotChecked=0, Total=11342 [2024-11-09 18:28:00,325 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 115 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 3497 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:00,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1207 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3497 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 18:28:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 18:28:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 205. [2024-11-09 18:28:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 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) [2024-11-09 18:28:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2024-11-09 18:28:00,368 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 67 [2024-11-09 18:28:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:00,368 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2024-11-09 18:28:00,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 52 states have internal predecessors, (114), 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) [2024-11-09 18:28:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2024-11-09 18:28:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 18:28:00,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:00,369 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:00,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:00,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:28:00,570 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:00,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash 985667284, now seen corresponding path program 14 times [2024-11-09 18:28:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651335270] [2024-11-09 18:28:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 20 proven. 72 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651335270] [2024-11-09 18:28:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651335270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281588772] [2024-11-09 18:28:00,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:00,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:00,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 18:28:00,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:00,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:00,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:28:00,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:01,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:01,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281588772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:01,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:28:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304222046] [2024-11-09 18:28:01,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:01,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:28:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:28:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:28:01,211 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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) [2024-11-09 18:28:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:01,731 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2024-11-09 18:28:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:28:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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 69 [2024-11-09 18:28:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:01,736 INFO L225 Difference]: With dead ends: 299 [2024-11-09 18:28:01,736 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 18:28:01,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 118 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:28:01,737 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 146 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:01,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:28:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 18:28:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 182. [2024-11-09 18:28:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.1767955801104972) internal successors, (213), 181 states have internal predecessors, (213), 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) [2024-11-09 18:28:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 213 transitions. [2024-11-09 18:28:01,774 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 213 transitions. Word has length 69 [2024-11-09 18:28:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:01,774 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 213 transitions. [2024-11-09 18:28:01,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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) [2024-11-09 18:28:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 213 transitions. [2024-11-09 18:28:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:28:01,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:01,775 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:01,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:01,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:01,980 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:01,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1025289523, now seen corresponding path program 15 times [2024-11-09 18:28:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:01,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603086310] [2024-11-09 18:28:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:28:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603086310] [2024-11-09 18:28:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603086310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954435733] [2024-11-09 18:28:02,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:02,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:02,206 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:02,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 18:28:02,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 18:28:02,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:02,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:28:02,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:28:02,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:28:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954435733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:02,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:02,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:28:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12196867] [2024-11-09 18:28:02,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:02,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:28:02,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:28:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:28:02,752 INFO L87 Difference]: Start difference. First operand 182 states and 213 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2024-11-09 18:28:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:03,011 INFO L93 Difference]: Finished difference Result 270 states and 312 transitions. [2024-11-09 18:28:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:28:03,011 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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 71 [2024-11-09 18:28:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:03,012 INFO L225 Difference]: With dead ends: 270 [2024-11-09 18:28:03,012 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 18:28:03,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:28:03,014 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 123 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:03,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 134 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 18:28:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2024-11-09 18:28:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.13) internal successors, (113), 100 states have internal predecessors, (113), 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) [2024-11-09 18:28:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2024-11-09 18:28:03,032 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 71 [2024-11-09 18:28:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:03,032 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2024-11-09 18:28:03,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2024-11-09 18:28:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2024-11-09 18:28:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:28:03,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:03,033 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:03,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:03,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:03,234 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:03,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1855887892, now seen corresponding path program 16 times [2024-11-09 18:28:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725515609] [2024-11-09 18:28:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:28:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725515609] [2024-11-09 18:28:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725515609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894429503] [2024-11-09 18:28:04,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:04,324 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:04,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 18:28:04,473 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:04,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:04,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 18:28:04,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:04,480 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 [2024-11-09 18:28:04,664 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 [2024-11-09 18:28:04,744 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 [2024-11-09 18:28:04,847 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 [2024-11-09 18:28:04,963 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 [2024-11-09 18:28:05,137 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 [2024-11-09 18:28:05,352 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 [2024-11-09 18:28:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:28:05,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:28:06,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894429503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:06,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:06,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 27] total 67 [2024-11-09 18:28:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279056678] [2024-11-09 18:28:06,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:06,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-09 18:28:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-09 18:28:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=4130, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 18:28:06,831 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 67 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 67 states have internal predecessors, (172), 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) [2024-11-09 18:28:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:16,198 INFO L93 Difference]: Finished difference Result 453 states and 548 transitions. [2024-11-09 18:28:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2024-11-09 18:28:16,199 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 67 states have internal predecessors, (172), 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 77 [2024-11-09 18:28:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:16,200 INFO L225 Difference]: With dead ends: 453 [2024-11-09 18:28:16,200 INFO L226 Difference]: Without dead ends: 446 [2024-11-09 18:28:16,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14105 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3232, Invalid=38998, Unknown=0, NotChecked=0, Total=42230 [2024-11-09 18:28:16,204 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 304 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 5842 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 6500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 5842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:16,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1695 Invalid, 6500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 5842 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 18:28:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-09 18:28:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 287. [2024-11-09 18:28:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.2062937062937062) internal successors, (345), 286 states have internal predecessors, (345), 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) [2024-11-09 18:28:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 345 transitions. [2024-11-09 18:28:16,264 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 345 transitions. Word has length 77 [2024-11-09 18:28:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:16,265 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 345 transitions. [2024-11-09 18:28:16,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 67 states have internal predecessors, (172), 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) [2024-11-09 18:28:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 345 transitions. [2024-11-09 18:28:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:28:16,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:16,266 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:16,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 18:28:16,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 18:28:16,467 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:16,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1984970611, now seen corresponding path program 4 times [2024-11-09 18:28:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791254565] [2024-11-09 18:28:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 18:28:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791254565] [2024-11-09 18:28:17,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791254565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701163182] [2024-11-09 18:28:17,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:17,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:17,101 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:17,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 18:28:17,243 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:17,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:17,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 18:28:17,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:17,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-09 18:28:17,336 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-09 18:28:17,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-09 18:28:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 18:28:17,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:18,021 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_444| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_444| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (select |c_#memory_int#3| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_444| 4) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (select .cse0 .cse1) 1))) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2))) is different from false [2024-11-09 18:28:18,074 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 53 treesize of output 47 [2024-11-09 18:28:18,085 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-09 18:28:18,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 58 [2024-11-09 18:28:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 103 refuted. 0 times theorem prover too weak. 45 trivial. 5 not checked. [2024-11-09 18:28:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701163182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:18,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 25 [2024-11-09 18:28:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998722287] [2024-11-09 18:28:18,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:18,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 18:28:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 18:28:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=481, Unknown=1, NotChecked=44, Total=600 [2024-11-09 18:28:18,132 INFO L87 Difference]: Start difference. First operand 287 states and 345 transitions. Second operand has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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) [2024-11-09 18:28:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:18,701 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2024-11-09 18:28:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:28:18,702 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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 77 [2024-11-09 18:28:18,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:18,703 INFO L225 Difference]: With dead ends: 506 [2024-11-09 18:28:18,703 INFO L226 Difference]: Without dead ends: 447 [2024-11-09 18:28:18,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=522, Unknown=1, NotChecked=46, Total=650 [2024-11-09 18:28:18,704 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 53 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:18,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 509 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1010 Invalid, 0 Unknown, 112 Unchecked, 0.4s Time] [2024-11-09 18:28:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-09 18:28:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 381. [2024-11-09 18:28:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.2026315789473685) internal successors, (457), 380 states have internal predecessors, (457), 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) [2024-11-09 18:28:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 457 transitions. [2024-11-09 18:28:18,790 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 457 transitions. Word has length 77 [2024-11-09 18:28:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:18,790 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 457 transitions. [2024-11-09 18:28:18,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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) [2024-11-09 18:28:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 457 transitions. [2024-11-09 18:28:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 18:28:18,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:18,792 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:18,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 18:28:18,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 18:28:18,993 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:18,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1062287028, now seen corresponding path program 4 times [2024-11-09 18:28:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:18,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726764285] [2024-11-09 18:28:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:18,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:28:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726764285] [2024-11-09 18:28:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726764285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939228849] [2024-11-09 18:28:20,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:28:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:20,062 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 18:28:20,199 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:28:20,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:20,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 18:28:20,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:20,206 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 [2024-11-09 18:28:20,231 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 36 treesize of output 16 [2024-11-09 18:28:20,355 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2024-11-09 18:28:20,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2024-11-09 18:28:20,474 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2024-11-09 18:28:20,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2024-11-09 18:28:20,676 INFO L349 Elim1Store]: treesize reduction 91, result has 33.1 percent of original size [2024-11-09 18:28:20,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 86 [2024-11-09 18:28:21,018 INFO L349 Elim1Store]: treesize reduction 91, result has 33.1 percent of original size [2024-11-09 18:28:21,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 117 treesize of output 121 [2024-11-09 18:28:21,409 INFO L349 Elim1Store]: treesize reduction 16, result has 62.8 percent of original size [2024-11-09 18:28:21,409 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 134 treesize of output 115 [2024-11-09 18:28:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 18:28:21,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 18:28:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939228849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:22,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 15] total 56 [2024-11-09 18:28:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503829183] [2024-11-09 18:28:22,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:22,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 18:28:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 18:28:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2834, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:28:22,327 INFO L87 Difference]: Start difference. First operand 381 states and 457 transitions. Second operand has 56 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 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) [2024-11-09 18:28:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:25,409 INFO L93 Difference]: Finished difference Result 540 states and 649 transitions. [2024-11-09 18:28:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 18:28:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 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 77 [2024-11-09 18:28:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:25,411 INFO L225 Difference]: With dead ends: 540 [2024-11-09 18:28:25,411 INFO L226 Difference]: Without dead ends: 284 [2024-11-09 18:28:25,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1022, Invalid=9690, Unknown=0, NotChecked=0, Total=10712 [2024-11-09 18:28:25,413 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 147 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:25,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 833 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:28:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-09 18:28:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 266. [2024-11-09 18:28:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1584905660377358) internal successors, (307), 265 states have internal predecessors, (307), 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) [2024-11-09 18:28:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 307 transitions. [2024-11-09 18:28:25,480 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 307 transitions. Word has length 77 [2024-11-09 18:28:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:25,480 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 307 transitions. [2024-11-09 18:28:25,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 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) [2024-11-09 18:28:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 307 transitions. [2024-11-09 18:28:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 18:28:25,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:25,481 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:25,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:25,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 18:28:25,682 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:25,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash 354559634, now seen corresponding path program 17 times [2024-11-09 18:28:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:25,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406255194] [2024-11-09 18:28:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:25,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:28:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406255194] [2024-11-09 18:28:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406255194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741590929] [2024-11-09 18:28:25,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:28:25,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:25,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:25,928 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:25,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 18:28:33,798 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:28:33,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:33,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:28:33,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:28:33,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:28:34,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741590929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:34,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:28:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306923531] [2024-11-09 18:28:34,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:34,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:28:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:28:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:28:34,113 INFO L87 Difference]: Start difference. First operand 266 states and 307 transitions. Second operand has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 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) [2024-11-09 18:28:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:34,351 INFO L93 Difference]: Finished difference Result 350 states and 401 transitions. [2024-11-09 18:28:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:28:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 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 81 [2024-11-09 18:28:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:34,353 INFO L225 Difference]: With dead ends: 350 [2024-11-09 18:28:34,353 INFO L226 Difference]: Without dead ends: 137 [2024-11-09 18:28:34,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:28:34,354 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 156 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:34,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 145 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-09 18:28:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2024-11-09 18:28:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 110 states have internal predecessors, (123), 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) [2024-11-09 18:28:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-11-09 18:28:34,374 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 81 [2024-11-09 18:28:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:34,374 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-11-09 18:28:34,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 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) [2024-11-09 18:28:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-11-09 18:28:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 18:28:34,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:34,375 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:34,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 18:28:34,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 18:28:34,575 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:34,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1797356341, now seen corresponding path program 18 times [2024-11-09 18:28:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356471351] [2024-11-09 18:28:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 30 proven. 98 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 18:28:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356471351] [2024-11-09 18:28:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356471351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896575633] [2024-11-09 18:28:34,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:28:34,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:34,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:34,837 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:34,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process