./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:03:04,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:03:04,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 23:03:04,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:03:04,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:03:04,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:03:04,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:03:04,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:03:04,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 23:03:04,527 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 23:03:04,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:03:04,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:03:04,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:03:04,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:03:04,529 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:03:04,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:03:04,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:03:04,530 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:03:04,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:03:04,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:03:04,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:03:04,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:03:04,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:03:04,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:03:04,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:03:04,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:03:04,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:03:04,535 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:03:04,535 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:03:04,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:03:04,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 23:03:04,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:03:04,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:03:04,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:03:04,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:03:04,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:03:04,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:03:04,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:03:04,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:03:04,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:03:04,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:03:04,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:03:04,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2024-11-16 23:03:04,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:03:04,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:03:04,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:03:04,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:03:04,802 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:03:04,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-1.i [2024-11-16 23:03:06,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:03:06,553 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:03:06,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-1.i [2024-11-16 23:03:06,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d721ad2dc/d180bf83d56540cd826ffee5960734cb/FLAGd1d3d0adc [2024-11-16 23:03:06,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d721ad2dc/d180bf83d56540cd826ffee5960734cb [2024-11-16 23:03:06,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:03:06,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:03:06,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:03:06,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:03:06,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:03:06,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:06" (1/1) ... [2024-11-16 23:03:06,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d5dc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:06, skipping insertion in model container [2024-11-16 23:03:06,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:06" (1/1) ... [2024-11-16 23:03:06,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:03:07,366 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/uthash-2.0.2/uthash_SAX_nondet_test4-1.i[33519,33532] [2024-11-16 23:03:07,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:03:07,539 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:03:07,581 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/uthash-2.0.2/uthash_SAX_nondet_test4-1.i[33519,33532] [2024-11-16 23:03:07,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:03:07,695 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:03:07,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07 WrapperNode [2024-11-16 23:03:07,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:03:07,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:03:07,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:03:07,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:03:07,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,808 INFO L138 Inliner]: procedures = 176, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1515 [2024-11-16 23:03:07,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:03:07,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:03:07,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:03:07,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:03:07,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,939 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-16 23:03:07,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,981 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:07,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:08,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:03:08,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:03:08,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:03:08,002 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:03:08,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (1/1) ... [2024-11-16 23:03:08,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:03:08,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:08,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:03:08,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:03:08,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 23:03:08,087 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 23:03:08,087 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 23:03:08,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 23:03:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 23:03:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:03:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:03:08,294 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:03:08,297 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:03:09,764 INFO L? ?]: Removed 377 outVars from TransFormulas that were not future-live. [2024-11-16 23:03:09,764 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:03:09,833 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:03:09,833 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-16 23:03:09,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:03:09 BoogieIcfgContainer [2024-11-16 23:03:09,834 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:03:09,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:03:09,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:03:09,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:03:09,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:03:06" (1/3) ... [2024-11-16 23:03:09,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f63e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:09, skipping insertion in model container [2024-11-16 23:03:09,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:07" (2/3) ... [2024-11-16 23:03:09,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f63e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:09, skipping insertion in model container [2024-11-16 23:03:09,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:03:09" (3/3) ... [2024-11-16 23:03:09,848 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test4-1.i [2024-11-16 23:03:09,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:03:09,865 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 23:03:09,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:03:09,952 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;@3b7d4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:03:09,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 23:03:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 400 states have (on average 1.605) internal successors, (642), 401 states have internal predecessors, (642), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 23:03:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 23:03:09,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:09,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:09,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:09,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1111828091, now seen corresponding path program 1 times [2024-11-16 23:03:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179113349] [2024-11-16 23:03:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:03:10,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179113349] [2024-11-16 23:03:10,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179113349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:10,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:10,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:03:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936893488] [2024-11-16 23:03:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:10,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:03:10,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:03:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:03:10,156 INFO L87 Difference]: Start difference. First operand has 409 states, 400 states have (on average 1.605) internal successors, (642), 401 states have internal predecessors, (642), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:03:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:10,310 INFO L93 Difference]: Finished difference Result 815 states and 1304 transitions. [2024-11-16 23:03:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:03:10,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 23:03:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:10,326 INFO L225 Difference]: With dead ends: 815 [2024-11-16 23:03:10,327 INFO L226 Difference]: Without dead ends: 405 [2024-11-16 23:03:10,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:03:10,336 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:10,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 542 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:03:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-16 23:03:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-16 23:03:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 397 states have (on average 1.433249370277078) internal successors, (569), 397 states have internal predecessors, (569), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 23:03:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2024-11-16 23:03:10,394 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 11 [2024-11-16 23:03:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:10,395 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2024-11-16 23:03:10,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:03:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2024-11-16 23:03:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 23:03:10,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:10,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:10,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:03:10,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:10,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash -62893775, now seen corresponding path program 1 times [2024-11-16 23:03:10,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:10,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522429494] [2024-11-16 23:03:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:10,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:03:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522429494] [2024-11-16 23:03:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522429494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:10,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:03:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438585277] [2024-11-16 23:03:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:10,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:03:10,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:03:10,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:10,561 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:03:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:11,069 INFO L93 Difference]: Finished difference Result 1134 states and 1641 transitions. [2024-11-16 23:03:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:03:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-16 23:03:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:11,075 INFO L225 Difference]: With dead ends: 1134 [2024-11-16 23:03:11,075 INFO L226 Difference]: Without dead ends: 729 [2024-11-16 23:03:11,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:11,078 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 469 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:11,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1535 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:03:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-16 23:03:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2024-11-16 23:03:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.448467966573816) internal successors, (1040), 718 states have internal predecessors, (1040), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1058 transitions. [2024-11-16 23:03:11,132 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1058 transitions. Word has length 12 [2024-11-16 23:03:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:11,132 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1058 transitions. [2024-11-16 23:03:11,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:03:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1058 transitions. [2024-11-16 23:03:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 23:03:11,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:11,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:11,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:03:11,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:11,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1314113807, now seen corresponding path program 1 times [2024-11-16 23:03:11,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104632340] [2024-11-16 23:03:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:11,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-16 23:03:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:11,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-16 23:03:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:03:11,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104632340] [2024-11-16 23:03:11,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104632340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:03:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26846718] [2024-11-16 23:03:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:03:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:03:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:03:11,817 INFO L87 Difference]: Start difference. First operand 729 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:03:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:12,343 INFO L93 Difference]: Finished difference Result 1405 states and 2043 transitions. [2024-11-16 23:03:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:03:12,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-16 23:03:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:12,351 INFO L225 Difference]: With dead ends: 1405 [2024-11-16 23:03:12,352 INFO L226 Difference]: Without dead ends: 738 [2024-11-16 23:03:12,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:03:12,354 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 108 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:12,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1848 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:03:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-16 23:03:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 729. [2024-11-16 23:03:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.4289693593314763) internal successors, (1026), 718 states have internal predecessors, (1026), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1044 transitions. [2024-11-16 23:03:12,380 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1044 transitions. Word has length 176 [2024-11-16 23:03:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:12,381 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1044 transitions. [2024-11-16 23:03:12,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:03:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1044 transitions. [2024-11-16 23:03:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 23:03:12,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:12,384 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:12,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:03:12,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:12,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1426646648, now seen corresponding path program 1 times [2024-11-16 23:03:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72907370] [2024-11-16 23:03:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:12,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-16 23:03:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:12,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-16 23:03:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:03:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72907370] [2024-11-16 23:03:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72907370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:12,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:12,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:03:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636082595] [2024-11-16 23:03:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:12,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:03:12,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:03:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:12,691 INFO L87 Difference]: Start difference. First operand 729 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:03:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:13,329 INFO L93 Difference]: Finished difference Result 1315 states and 1892 transitions. [2024-11-16 23:03:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:03:13,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-16 23:03:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:13,335 INFO L225 Difference]: With dead ends: 1315 [2024-11-16 23:03:13,336 INFO L226 Difference]: Without dead ends: 730 [2024-11-16 23:03:13,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:13,339 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 137 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:13,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1477 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:03:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-16 23:03:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 727. [2024-11-16 23:03:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4287709497206704) internal successors, (1023), 716 states have internal predecessors, (1023), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1041 transitions. [2024-11-16 23:03:13,369 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1041 transitions. Word has length 176 [2024-11-16 23:03:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:13,370 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1041 transitions. [2024-11-16 23:03:13,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:03:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1041 transitions. [2024-11-16 23:03:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 23:03:13,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:13,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:13,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:03:13,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:13,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1811520339, now seen corresponding path program 1 times [2024-11-16 23:03:13,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:13,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968232182] [2024-11-16 23:03:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:13,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:13,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 23:03:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:13,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 23:03:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:13,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 23:03:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:13,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 23:03:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968232182] [2024-11-16 23:03:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968232182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:03:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988184281] [2024-11-16 23:03:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:13,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:03:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:03:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:03:13,762 INFO L87 Difference]: Start difference. First operand 727 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:14,283 INFO L93 Difference]: Finished difference Result 1211 states and 1740 transitions. [2024-11-16 23:03:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:03:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 191 [2024-11-16 23:03:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:14,288 INFO L225 Difference]: With dead ends: 1211 [2024-11-16 23:03:14,288 INFO L226 Difference]: Without dead ends: 736 [2024-11-16 23:03:14,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:03:14,289 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 108 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:14,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1827 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:03:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-16 23:03:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 727. [2024-11-16 23:03:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4092178770949721) internal successors, (1009), 716 states have internal predecessors, (1009), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1027 transitions. [2024-11-16 23:03:14,309 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1027 transitions. Word has length 191 [2024-11-16 23:03:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:14,310 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1027 transitions. [2024-11-16 23:03:14,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1027 transitions. [2024-11-16 23:03:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 23:03:14,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:14,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:14,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:03:14,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:14,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash -120962252, now seen corresponding path program 1 times [2024-11-16 23:03:14,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:14,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358296563] [2024-11-16 23:03:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:14,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:15,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 23:03:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:15,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 23:03:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:15,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 23:03:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:15,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 23:03:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 23:03:15,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:15,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358296563] [2024-11-16 23:03:15,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358296563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726005398] [2024-11-16 23:03:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:15,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:15,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:15,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:15,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:03:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:16,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 23:03:16,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:16,110 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 17 [2024-11-16 23:03:16,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 23:03:16,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 58 [2024-11-16 23:03:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:16,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726005398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:16,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:16,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-16 23:03:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546178361] [2024-11-16 23:03:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:16,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:03:16,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:03:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-16 23:03:16,990 INFO L87 Difference]: Start difference. First operand 727 states and 1027 transitions. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:18,813 INFO L93 Difference]: Finished difference Result 1481 states and 2081 transitions. [2024-11-16 23:03:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 23:03:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-16 23:03:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:18,818 INFO L225 Difference]: With dead ends: 1481 [2024-11-16 23:03:18,818 INFO L226 Difference]: Without dead ends: 842 [2024-11-16 23:03:18,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-16 23:03:18,820 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 829 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:18,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2867 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 23:03:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-16 23:03:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 758. [2024-11-16 23:03:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 747 states have (on average 1.4016064257028114) internal successors, (1047), 747 states have internal predecessors, (1047), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1065 transitions. [2024-11-16 23:03:18,852 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1065 transitions. Word has length 191 [2024-11-16 23:03:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:18,852 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1065 transitions. [2024-11-16 23:03:18,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1065 transitions. [2024-11-16 23:03:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 23:03:18,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:18,856 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:18,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 23:03:19,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 23:03:19,057 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash 164173651, now seen corresponding path program 1 times [2024-11-16 23:03:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492088760] [2024-11-16 23:03:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:19,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 23:03:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:19,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 23:03:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:19,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 23:03:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:19,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 23:03:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492088760] [2024-11-16 23:03:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492088760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:03:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230354672] [2024-11-16 23:03:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:19,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:03:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:03:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:19,324 INFO L87 Difference]: Start difference. First operand 758 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:19,773 INFO L93 Difference]: Finished difference Result 1435 states and 2032 transitions. [2024-11-16 23:03:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:03:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-16 23:03:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:19,777 INFO L225 Difference]: With dead ends: 1435 [2024-11-16 23:03:19,777 INFO L226 Difference]: Without dead ends: 777 [2024-11-16 23:03:19,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:03:19,779 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 5 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:19,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1436 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:03:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-16 23:03:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 772. [2024-11-16 23:03:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 761 states have (on average 1.3915900131406045) internal successors, (1059), 761 states have internal predecessors, (1059), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1077 transitions. [2024-11-16 23:03:19,800 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1077 transitions. Word has length 191 [2024-11-16 23:03:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:19,801 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1077 transitions. [2024-11-16 23:03:19,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1077 transitions. [2024-11-16 23:03:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 23:03:19,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:19,803 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:19,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:03:19,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:19,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash -698130510, now seen corresponding path program 1 times [2024-11-16 23:03:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64452701] [2024-11-16 23:03:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:20,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 23:03:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:20,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 23:03:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:20,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 23:03:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:20,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 23:03:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64452701] [2024-11-16 23:03:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64452701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:20,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:03:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377024024] [2024-11-16 23:03:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:20,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:03:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:03:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:03:20,061 INFO L87 Difference]: Start difference. First operand 772 states and 1077 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:20,807 INFO L93 Difference]: Finished difference Result 1376 states and 1927 transitions. [2024-11-16 23:03:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:03:20,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-16 23:03:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:20,812 INFO L225 Difference]: With dead ends: 1376 [2024-11-16 23:03:20,812 INFO L226 Difference]: Without dead ends: 634 [2024-11-16 23:03:20,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:03:20,815 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 12 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:20,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1632 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:03:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-16 23:03:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2024-11-16 23:03:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 620 states have (on average 1.367741935483871) internal successors, (848), 620 states have internal predecessors, (848), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 866 transitions. [2024-11-16 23:03:20,836 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 866 transitions. Word has length 191 [2024-11-16 23:03:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:20,837 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 866 transitions. [2024-11-16 23:03:20,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 866 transitions. [2024-11-16 23:03:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-16 23:03:20,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:20,840 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:20,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 23:03:20,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:20,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2029944899, now seen corresponding path program 1 times [2024-11-16 23:03:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989829529] [2024-11-16 23:03:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:21,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 23:03:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:21,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 23:03:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:21,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-16 23:03:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:21,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 23:03:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 23:03:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989829529] [2024-11-16 23:03:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989829529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823895512] [2024-11-16 23:03:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:21,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:21,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:21,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:03:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:22,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 23:03:22,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:22,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823895512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 23:03:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75353417] [2024-11-16 23:03:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:22,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:03:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:03:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:22,520 INFO L87 Difference]: Start difference. First operand 631 states and 866 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:22,710 INFO L93 Difference]: Finished difference Result 1222 states and 1690 transitions. [2024-11-16 23:03:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:03:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2024-11-16 23:03:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:22,713 INFO L225 Difference]: With dead ends: 1222 [2024-11-16 23:03:22,713 INFO L226 Difference]: Without dead ends: 631 [2024-11-16 23:03:22,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:22,717 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 13 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:22,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1216 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:03:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-16 23:03:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2024-11-16 23:03:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 620 states have (on average 1.364516129032258) internal successors, (846), 620 states have internal predecessors, (846), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 864 transitions. [2024-11-16 23:03:22,740 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 864 transitions. Word has length 192 [2024-11-16 23:03:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:22,740 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 864 transitions. [2024-11-16 23:03:22,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 864 transitions. [2024-11-16 23:03:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-16 23:03:22,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:22,743 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:22,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 23:03:22,947 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,SelfDestructingSolverStorable8 [2024-11-16 23:03:22,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:22,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1350411863, now seen corresponding path program 1 times [2024-11-16 23:03:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550013135] [2024-11-16 23:03:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:23,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:03:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:23,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 23:03:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:23,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-16 23:03:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:23,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-16 23:03:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 23:03:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550013135] [2024-11-16 23:03:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550013135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:03:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201490066] [2024-11-16 23:03:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:23,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:03:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:03:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:23,494 INFO L87 Difference]: Start difference. First operand 631 states and 864 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:24,145 INFO L93 Difference]: Finished difference Result 1228 states and 1704 transitions. [2024-11-16 23:03:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:03:24,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-11-16 23:03:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:24,149 INFO L225 Difference]: With dead ends: 1228 [2024-11-16 23:03:24,149 INFO L226 Difference]: Without dead ends: 640 [2024-11-16 23:03:24,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:24,151 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 7 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:24,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2296 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:03:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-16 23:03:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-11-16 23:03:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 626 states have (on average 1.3610223642172523) internal successors, (852), 626 states have internal predecessors, (852), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 23:03:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 870 transitions. [2024-11-16 23:03:24,175 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 870 transitions. Word has length 193 [2024-11-16 23:03:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:24,175 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 870 transitions. [2024-11-16 23:03:24,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 870 transitions. [2024-11-16 23:03:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-16 23:03:24,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:24,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:24,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:03:24,178 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:24,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1040272901, now seen corresponding path program 1 times [2024-11-16 23:03:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717998643] [2024-11-16 23:03:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:24,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:24,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 23:03:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:24,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-16 23:03:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:24,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 23:03:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 23:03:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717998643] [2024-11-16 23:03:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717998643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917858702] [2024-11-16 23:03:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:24,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:24,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:24,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 23:03:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:25,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 23:03:25,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 23:03:25,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917858702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:25,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:25,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2024-11-16 23:03:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971201419] [2024-11-16 23:03:25,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:25,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:03:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:03:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:03:25,849 INFO L87 Difference]: Start difference. First operand 637 states and 870 transitions. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:26,080 INFO L93 Difference]: Finished difference Result 1247 states and 1719 transitions. [2024-11-16 23:03:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:03:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 194 [2024-11-16 23:03:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:26,084 INFO L225 Difference]: With dead ends: 1247 [2024-11-16 23:03:26,084 INFO L226 Difference]: Without dead ends: 703 [2024-11-16 23:03:26,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:03:26,087 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 772 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:26,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1887 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:03:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-16 23:03:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 640. [2024-11-16 23:03:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 628 states have (on average 1.3614649681528663) internal successors, (855), 629 states have internal predecessors, (855), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-16 23:03:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 876 transitions. [2024-11-16 23:03:26,108 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 876 transitions. Word has length 194 [2024-11-16 23:03:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:26,108 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 876 transitions. [2024-11-16 23:03:26,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 876 transitions. [2024-11-16 23:03:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-16 23:03:26,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:26,112 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:26,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 23:03:26,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:26,313 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:26,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -887268997, now seen corresponding path program 1 times [2024-11-16 23:03:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756369086] [2024-11-16 23:03:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:26,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:27,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:27,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 23:03:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:27,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-16 23:03:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:27,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 23:03:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 23:03:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756369086] [2024-11-16 23:03:27,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756369086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231004155] [2024-11-16 23:03:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:27,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:27,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 23:03:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:28,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 23:03:28,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:03:28,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:03:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 23:03:28,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231004155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:03:28,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:03:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-11-16 23:03:28,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722715518] [2024-11-16 23:03:28,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:03:28,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 23:03:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 23:03:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:03:28,904 INFO L87 Difference]: Start difference. First operand 640 states and 876 transitions. Second operand has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 23:03:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:29,633 INFO L93 Difference]: Finished difference Result 1261 states and 1752 transitions. [2024-11-16 23:03:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 23:03:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 198 [2024-11-16 23:03:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:29,637 INFO L225 Difference]: With dead ends: 1261 [2024-11-16 23:03:29,638 INFO L226 Difference]: Without dead ends: 714 [2024-11-16 23:03:29,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-16 23:03:29,639 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 393 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:29,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 2993 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:03:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-16 23:03:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 649. [2024-11-16 23:03:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 636 states have (on average 1.3663522012578617) internal successors, (869), 637 states have internal predecessors, (869), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 893 transitions. [2024-11-16 23:03:29,660 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 893 transitions. Word has length 198 [2024-11-16 23:03:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:29,660 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 893 transitions. [2024-11-16 23:03:29,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 23:03:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 893 transitions. [2024-11-16 23:03:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-16 23:03:29,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:29,663 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:29,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 23:03:29,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:29,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:29,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash -562767493, now seen corresponding path program 2 times [2024-11-16 23:03:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:29,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515063711] [2024-11-16 23:03:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:29,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:31,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:31,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:03:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:31,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-16 23:03:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:31,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-16 23:03:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 23:03:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515063711] [2024-11-16 23:03:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515063711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229193955] [2024-11-16 23:03:31,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:03:31,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:31,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:31,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 23:03:31,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:03:31,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:03:31,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 23:03:31,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 23:03:31,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229193955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:31,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:31,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-11-16 23:03:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560966337] [2024-11-16 23:03:31,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:31,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 23:03:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 23:03:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-16 23:03:31,994 INFO L87 Difference]: Start difference. First operand 649 states and 893 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:32,548 INFO L93 Difference]: Finished difference Result 1159 states and 1599 transitions. [2024-11-16 23:03:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:03:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 206 [2024-11-16 23:03:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:32,552 INFO L225 Difference]: With dead ends: 1159 [2024-11-16 23:03:32,552 INFO L226 Difference]: Without dead ends: 743 [2024-11-16 23:03:32,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-16 23:03:32,554 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 25 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:32,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2552 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:03:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-16 23:03:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 719. [2024-11-16 23:03:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 706 states have (on average 1.3526912181303117) internal successors, (955), 707 states have internal predecessors, (955), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 979 transitions. [2024-11-16 23:03:32,575 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 979 transitions. Word has length 206 [2024-11-16 23:03:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:32,575 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 979 transitions. [2024-11-16 23:03:32,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 979 transitions. [2024-11-16 23:03:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-16 23:03:32,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:32,578 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:32,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 23:03:32,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 23:03:32,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1122419650, now seen corresponding path program 1 times [2024-11-16 23:03:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084656268] [2024-11-16 23:03:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:33,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:33,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:03:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:33,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 23:03:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:33,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-16 23:03:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-16 23:03:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084656268] [2024-11-16 23:03:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084656268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:03:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998118298] [2024-11-16 23:03:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:33,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:03:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:03:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:33,496 INFO L87 Difference]: Start difference. First operand 719 states and 979 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:35,180 INFO L93 Difference]: Finished difference Result 1173 states and 1605 transitions. [2024-11-16 23:03:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:03:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 207 [2024-11-16 23:03:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:35,184 INFO L225 Difference]: With dead ends: 1173 [2024-11-16 23:03:35,184 INFO L226 Difference]: Without dead ends: 723 [2024-11-16 23:03:35,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:03:35,186 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 16 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:35,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2060 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 23:03:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-16 23:03:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 713. [2024-11-16 23:03:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 700 states have (on average 1.35) internal successors, (945), 701 states have internal predecessors, (945), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 969 transitions. [2024-11-16 23:03:35,227 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 969 transitions. Word has length 207 [2024-11-16 23:03:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:35,228 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 969 transitions. [2024-11-16 23:03:35,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 969 transitions. [2024-11-16 23:03:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-16 23:03:35,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:35,231 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:35,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 23:03:35,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:35,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1827510344, now seen corresponding path program 1 times [2024-11-16 23:03:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951728644] [2024-11-16 23:03:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:35,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:35,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:03:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:35,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-16 23:03:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:35,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-16 23:03:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-16 23:03:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951728644] [2024-11-16 23:03:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951728644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:03:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902954203] [2024-11-16 23:03:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:35,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:03:35,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:03:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:35,769 INFO L87 Difference]: Start difference. First operand 713 states and 969 transitions. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:36,424 INFO L93 Difference]: Finished difference Result 1172 states and 1602 transitions. [2024-11-16 23:03:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:03:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 208 [2024-11-16 23:03:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:36,428 INFO L225 Difference]: With dead ends: 1172 [2024-11-16 23:03:36,428 INFO L226 Difference]: Without dead ends: 727 [2024-11-16 23:03:36,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:03:36,430 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 11 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:36,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2087 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:03:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-16 23:03:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 721. [2024-11-16 23:03:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 708 states have (on average 1.3488700564971752) internal successors, (955), 709 states have internal predecessors, (955), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 979 transitions. [2024-11-16 23:03:36,451 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 979 transitions. Word has length 208 [2024-11-16 23:03:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:36,451 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 979 transitions. [2024-11-16 23:03:36,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 23:03:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 979 transitions. [2024-11-16 23:03:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-16 23:03:36,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:36,454 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:36,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 23:03:36,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:36,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash 791767676, now seen corresponding path program 1 times [2024-11-16 23:03:36,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:36,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483426817] [2024-11-16 23:03:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:37,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:37,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:03:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:37,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-16 23:03:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:37,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-16 23:03:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 23:03:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483426817] [2024-11-16 23:03:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483426817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673784905] [2024-11-16 23:03:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:37,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:37,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:37,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 23:03:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:38,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 23:03:38,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 23:03:38,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:03:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 19 proven. 53 refuted. 1 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-16 23:03:43,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673784905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:03:43,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:03:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2024-11-16 23:03:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897087435] [2024-11-16 23:03:43,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:03:43,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 23:03:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 23:03:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=252, Unknown=1, NotChecked=0, Total=342 [2024-11-16 23:03:43,229 INFO L87 Difference]: Start difference. First operand 721 states and 979 transitions. Second operand has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 23:03:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:44,363 INFO L93 Difference]: Finished difference Result 1368 states and 1886 transitions. [2024-11-16 23:03:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 23:03:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 209 [2024-11-16 23:03:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:44,367 INFO L225 Difference]: With dead ends: 1368 [2024-11-16 23:03:44,367 INFO L226 Difference]: Without dead ends: 736 [2024-11-16 23:03:44,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=268, Invalid=661, Unknown=1, NotChecked=0, Total=930 [2024-11-16 23:03:44,369 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 34 mSDsluCounter, 5922 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6357 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:44,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 6357 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:03:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-16 23:03:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 730. [2024-11-16 23:03:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 717 states have (on average 1.3542538354253835) internal successors, (971), 718 states have internal predecessors, (971), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 995 transitions. [2024-11-16 23:03:44,392 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 995 transitions. Word has length 209 [2024-11-16 23:03:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:44,392 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 995 transitions. [2024-11-16 23:03:44,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 23:03:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 995 transitions. [2024-11-16 23:03:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-16 23:03:44,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:44,395 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:44,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 23:03:44,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 23:03:44,596 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:44,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1700042478, now seen corresponding path program 2 times [2024-11-16 23:03:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400380176] [2024-11-16 23:03:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:45,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:46,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 23:03:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:46,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-16 23:03:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:46,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-16 23:03:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-16 23:03:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400380176] [2024-11-16 23:03:46,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400380176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002864235] [2024-11-16 23:03:46,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:03:46,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:46,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:46,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:46,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 23:03:47,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:03:47,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:03:47,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 23:03:47,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-16 23:03:47,938 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:47,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002864235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:47,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-16 23:03:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616749955] [2024-11-16 23:03:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:47,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:03:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:03:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:03:47,941 INFO L87 Difference]: Start difference. First operand 730 states and 995 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:48,416 INFO L93 Difference]: Finished difference Result 1417 states and 1946 transitions. [2024-11-16 23:03:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:03:48,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 223 [2024-11-16 23:03:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:48,419 INFO L225 Difference]: With dead ends: 1417 [2024-11-16 23:03:48,419 INFO L226 Difference]: Without dead ends: 740 [2024-11-16 23:03:48,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:03:48,421 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:48,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2320 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:03:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-16 23:03:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 738. [2024-11-16 23:03:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 725 states have (on average 1.3531034482758622) internal successors, (981), 726 states have internal predecessors, (981), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1005 transitions. [2024-11-16 23:03:48,441 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1005 transitions. Word has length 223 [2024-11-16 23:03:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:48,442 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1005 transitions. [2024-11-16 23:03:48,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1005 transitions. [2024-11-16 23:03:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-16 23:03:48,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:48,445 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:48,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 23:03:48,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:48,646 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:48,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1178717976, now seen corresponding path program 1 times [2024-11-16 23:03:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483061632] [2024-11-16 23:03:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:49,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:03:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:49,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 23:03:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:49,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-16 23:03:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:49,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-16 23:03:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-16 23:03:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483061632] [2024-11-16 23:03:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483061632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:49,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:49,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 23:03:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762743561] [2024-11-16 23:03:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:49,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:03:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:03:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:03:49,284 INFO L87 Difference]: Start difference. First operand 738 states and 1005 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:49,937 INFO L93 Difference]: Finished difference Result 1431 states and 1965 transitions. [2024-11-16 23:03:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:03:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 223 [2024-11-16 23:03:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:49,941 INFO L225 Difference]: With dead ends: 1431 [2024-11-16 23:03:49,941 INFO L226 Difference]: Without dead ends: 750 [2024-11-16 23:03:49,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:03:49,943 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 11 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:49,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2670 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:03:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-16 23:03:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 738. [2024-11-16 23:03:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 725 states have (on average 1.3531034482758622) internal successors, (981), 726 states have internal predecessors, (981), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1005 transitions. [2024-11-16 23:03:49,965 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1005 transitions. Word has length 223 [2024-11-16 23:03:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:49,966 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1005 transitions. [2024-11-16 23:03:49,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1005 transitions. [2024-11-16 23:03:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-16 23:03:49,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:49,969 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:49,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 23:03:49,969 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:49,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1909214309, now seen corresponding path program 1 times [2024-11-16 23:03:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329812427] [2024-11-16 23:03:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:51,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:03:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:51,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-16 23:03:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:51,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-16 23:03:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:51,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-16 23:03:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-16 23:03:51,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329812427] [2024-11-16 23:03:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329812427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080200301] [2024-11-16 23:03:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:51,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:51,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:51,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 23:03:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:52,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 23:03:52,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-16 23:03:52,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:03:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080200301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:52,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:03:52,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-16 23:03:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093201913] [2024-11-16 23:03:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:52,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:03:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:03:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-16 23:03:52,517 INFO L87 Difference]: Start difference. First operand 738 states and 1005 transitions. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:53,043 INFO L93 Difference]: Finished difference Result 1434 states and 1965 transitions. [2024-11-16 23:03:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:03:53,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 224 [2024-11-16 23:03:53,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:53,047 INFO L225 Difference]: With dead ends: 1434 [2024-11-16 23:03:53,047 INFO L226 Difference]: Without dead ends: 758 [2024-11-16 23:03:53,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-16 23:03:53,049 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 33 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:53,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2712 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:03:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-16 23:03:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 748. [2024-11-16 23:03:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 735 states have (on average 1.3510204081632653) internal successors, (993), 736 states have internal predecessors, (993), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1017 transitions. [2024-11-16 23:03:53,069 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1017 transitions. Word has length 224 [2024-11-16 23:03:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:53,069 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1017 transitions. [2024-11-16 23:03:53,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1017 transitions. [2024-11-16 23:03:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-16 23:03:53,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:53,071 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:53,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 23:03:53,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:53,272 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:53,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1433013845, now seen corresponding path program 1 times [2024-11-16 23:03:53,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:53,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837820839] [2024-11-16 23:03:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:53,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:53,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:03:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:53,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-16 23:03:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:53,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-16 23:03:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:53,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-16 23:03:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-16 23:03:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837820839] [2024-11-16 23:03:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837820839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:03:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:03:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:03:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724605566] [2024-11-16 23:03:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:03:53,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:03:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:03:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:03:53,948 INFO L87 Difference]: Start difference. First operand 748 states and 1017 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:03:54,637 INFO L93 Difference]: Finished difference Result 1451 states and 1987 transitions. [2024-11-16 23:03:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:03:54,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 224 [2024-11-16 23:03:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:03:54,641 INFO L225 Difference]: With dead ends: 1451 [2024-11-16 23:03:54,641 INFO L226 Difference]: Without dead ends: 770 [2024-11-16 23:03:54,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:03:54,644 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 19 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:03:54,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3505 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:03:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-16 23:03:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 762. [2024-11-16 23:03:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 749 states have (on average 1.349799732977303) internal successors, (1011), 750 states have internal predecessors, (1011), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-16 23:03:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1035 transitions. [2024-11-16 23:03:54,671 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1035 transitions. Word has length 224 [2024-11-16 23:03:54,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:03:54,671 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1035 transitions. [2024-11-16 23:03:54,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 23:03:54,671 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1035 transitions. [2024-11-16 23:03:54,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-16 23:03:54,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:03:54,673 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:03:54,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 23:03:54,673 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:03:54,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:03:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -952946969, now seen corresponding path program 1 times [2024-11-16 23:03:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:03:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34263026] [2024-11-16 23:03:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:03:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:55,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 23:03:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:55,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 23:03:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:55,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-16 23:03:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:56,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-11-16 23:03:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-16 23:03:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:03:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34263026] [2024-11-16 23:03:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34263026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:03:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553347591] [2024-11-16 23:03:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:03:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:03:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:03:56,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:03:56,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 23:03:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:03:57,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-16 23:03:57,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:03:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 115 proven. 6 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-16 23:03:57,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:03:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 217 proven. 55 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-16 23:03:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553347591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:03:58,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:03:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 14] total 25 [2024-11-16 23:03:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958254837] [2024-11-16 23:03:58,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:03:58,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 23:03:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:03:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 23:03:58,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2024-11-16 23:03:58,115 INFO L87 Difference]: Start difference. First operand 762 states and 1035 transitions. Second operand has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 23:04:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:01,557 INFO L93 Difference]: Finished difference Result 1493 states and 2055 transitions. [2024-11-16 23:04:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 23:04:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 225 [2024-11-16 23:04:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:01,560 INFO L225 Difference]: With dead ends: 1493 [2024-11-16 23:04:01,560 INFO L226 Difference]: Without dead ends: 836 [2024-11-16 23:04:01,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=554, Invalid=1086, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 23:04:01,562 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 396 mSDsluCounter, 6472 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:01,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 6916 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:04:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-16 23:04:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 767. [2024-11-16 23:04:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 754 states have (on average 1.3488063660477454) internal successors, (1017), 755 states have internal predecessors, (1017), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-16 23:04:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1038 transitions. [2024-11-16 23:04:01,586 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1038 transitions. Word has length 225 [2024-11-16 23:04:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:01,586 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1038 transitions. [2024-11-16 23:04:01,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 23:04:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1038 transitions. [2024-11-16 23:04:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-16 23:04:01,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:01,589 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:04:01,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 23:04:01,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:04:01,790 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:01,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash -259586307, now seen corresponding path program 2 times [2024-11-16 23:04:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:01,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941143398] [2024-11-16 23:04:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:02,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 23:04:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:03,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 23:04:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:03,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 23:04:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:03,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-11-16 23:04:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 2 proven. 249 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-16 23:04:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941143398] [2024-11-16 23:04:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941143398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:04:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539956993] [2024-11-16 23:04:03,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:04:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:04:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:04:03,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:04:03,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 23:04:06,045 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:04:06,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:04:06,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 393 conjuncts are in the unsatisfiable core [2024-11-16 23:04:06,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:04:06,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 23:04:06,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 23:04:06,300 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-16 23:04:06,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 29 [2024-11-16 23:04:06,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 23:04:06,379 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 18 treesize of output 10 [2024-11-16 23:04:06,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 23:04:06,598 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-16 23:04:06,598 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-16 23:04:06,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11