./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condg.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/condg.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:22:36,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:22:37,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:22:37,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:22:37,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:22:37,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:22:37,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:22:37,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:22:37,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:22:37,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:22:37,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:22:37,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:22:37,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:22:37,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:22:37,054 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:22:37,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:22:37,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:22:37,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:22:37,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:22:37,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:22:37,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:22:37,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:22:37,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:22:37,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:22:37,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:22:37,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:22:37,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:22:37,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:22:37,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:22:37,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:22:37,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:22:37,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:22:37,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:22:37,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:22:37,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:22:37,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:22:37,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:22:37,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:22:37,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:22:37,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:22:37,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:22:37,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:22:37,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 [2024-11-09 18:22:37,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:22:37,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:22:37,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:22:37,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:22:37,386 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:22:37,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condg.c [2024-11-09 18:22:39,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:22:39,156 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:22:39,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condg.c [2024-11-09 18:22:39,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b129ea36/7ac0e32fe8a14510b4668104828839a5/FLAG0ba0976cf [2024-11-09 18:22:39,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b129ea36/7ac0e32fe8a14510b4668104828839a5 [2024-11-09 18:22:39,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:22:39,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:22:39,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:22:39,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:22:39,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:22:39,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f79f11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39, skipping insertion in model container [2024-11-09 18:22:39,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:22:39,330 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condg.c[588,601] [2024-11-09 18:22:39,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:22:39,375 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:22:39,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condg.c[588,601] [2024-11-09 18:22:39,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:22:39,464 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:22:39,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39 WrapperNode [2024-11-09 18:22:39,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:22:39,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:22:39,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:22:39,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:22:39,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,510 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-11-09 18:22:39,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:22:39,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:22:39,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:22:39,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:22:39,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,588 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 4, 7]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 2, 3]. [2024-11-09 18:22:39,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,602 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:22:39,619 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:22:39,620 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:22:39,620 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:22:39,620 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (1/1) ... [2024-11-09 18:22:39,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:22:39,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:39,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:22:39,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:22:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:22:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:22:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:22:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:22:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:22:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:22:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:22:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:22:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:22:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:22:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:22:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:22:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:22:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:22:39,937 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:22:39,942 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:22:40,200 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-09 18:22:40,212 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 18:22:40,216 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:22:40,238 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:22:40,240 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:22:40,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:22:40 BoogieIcfgContainer [2024-11-09 18:22:40,241 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:22:40,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:22:40,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:22:40,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:22:40,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:22:39" (1/3) ... [2024-11-09 18:22:40,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435a208a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:40, skipping insertion in model container [2024-11-09 18:22:40,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:39" (2/3) ... [2024-11-09 18:22:40,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435a208a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:40, skipping insertion in model container [2024-11-09 18:22:40,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:22:40" (3/3) ... [2024-11-09 18:22:40,257 INFO L112 eAbstractionObserver]: Analyzing ICFG condg.c [2024-11-09 18:22:40,287 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:22:40,288 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:22:40,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:22:40,417 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;@7af149fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:22:40,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:22:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:22:40,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:40,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:40,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:40,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1929630769, now seen corresponding path program 1 times [2024-11-09 18:22:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435698729] [2024-11-09 18:22:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435698729] [2024-11-09 18:22:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435698729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:22:40,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:22:40,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:22:40,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137720230] [2024-11-09 18:22:40,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:22:40,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:22:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:22:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:22:40,734 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:40,764 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-09 18:22:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:22:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 18:22:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:40,781 INFO L225 Difference]: With dead ends: 51 [2024-11-09 18:22:40,785 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 18:22:40,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:22:40,797 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:40,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 18:22:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 18:22:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 18:22:40,944 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-09 18:22:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:40,945 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 18:22:40,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 18:22:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 18:22:40,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:40,946 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:40,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:22:40,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:40,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash -840675012, now seen corresponding path program 1 times [2024-11-09 18:22:40,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074700608] [2024-11-09 18:22:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074700608] [2024-11-09 18:22:41,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074700608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:22:41,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:22:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:22:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172645560] [2024-11-09 18:22:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:22:41,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:22:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:22:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:22:41,241 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:41,298 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-09 18:22:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:22:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-09 18:22:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:41,300 INFO L225 Difference]: With dead ends: 54 [2024-11-09 18:22:41,300 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 18:22:41,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:22:41,301 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 34 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:41,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 18:22:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2024-11-09 18:22:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-09 18:22:41,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2024-11-09 18:22:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:41,309 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-09 18:22:41,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-09 18:22:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:22:41,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:41,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:41,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:22:41,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:41,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1668823750, now seen corresponding path program 1 times [2024-11-09 18:22:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829553051] [2024-11-09 18:22:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829553051] [2024-11-09 18:22:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829553051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587830064] [2024-11-09 18:22:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:41,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:41,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:41,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:41,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:22:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:41,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:22:41,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:41,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:42,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:42,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:42,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:22:42,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 18:22:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:42,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587830064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:42,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 18:22:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170694789] [2024-11-09 18:22:42,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:42,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:22:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:22:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:22:42,338 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:42,490 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2024-11-09 18:22:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:22:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:22:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:42,496 INFO L225 Difference]: With dead ends: 69 [2024-11-09 18:22:42,496 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 18:22:42,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:22:42,497 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:42,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 160 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 18:22:42,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2024-11-09 18:22:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-09 18:22:42,510 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2024-11-09 18:22:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:42,510 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-09 18:22:42,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-09 18:22:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:22:42,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:42,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:42,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:22:42,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:42,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:42,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1865337255, now seen corresponding path program 1 times [2024-11-09 18:22:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760841194] [2024-11-09 18:22:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:43,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:43,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760841194] [2024-11-09 18:22:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760841194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005157110] [2024-11-09 18:22:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:43,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:43,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:43,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:22:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:43,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 18:22:43,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:43,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:43,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:43,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:43,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:43,390 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 20 treesize of output 18 [2024-11-09 18:22:43,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-11-09 18:22:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005157110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:43,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:43,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-09 18:22:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428940619] [2024-11-09 18:22:43,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:22:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:22:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:22:43,428 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:43,580 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2024-11-09 18:22:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:22:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:22:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:43,581 INFO L225 Difference]: With dead ends: 98 [2024-11-09 18:22:43,581 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 18:22:43,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-11-09 18:22:43,582 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 59 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:43,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 18:22:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2024-11-09 18:22:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-09 18:22:43,590 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2024-11-09 18:22:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:43,590 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-09 18:22:43,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-09 18:22:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:22:43,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:43,591 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:43,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:43,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 18:22:43,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:43,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1125620166, now seen corresponding path program 2 times [2024-11-09 18:22:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089936786] [2024-11-09 18:22:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:43,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089936786] [2024-11-09 18:22:43,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089936786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963283858] [2024-11-09 18:22:43,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:43,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:43,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:43,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:22:43,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:43,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:43,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:22:43,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:43,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963283858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 18:22:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681812511] [2024-11-09 18:22:44,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:22:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:22:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:22:44,010 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:44,173 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2024-11-09 18:22:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:22:44,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-09 18:22:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:44,174 INFO L225 Difference]: With dead ends: 120 [2024-11-09 18:22:44,174 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 18:22:44,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:22:44,175 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 192 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:44,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 165 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 18:22:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2024-11-09 18:22:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-09 18:22:44,181 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 29 [2024-11-09 18:22:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:44,181 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-09 18:22:44,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-09 18:22:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 18:22:44,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:44,182 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:44,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:22:44,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:44,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:44,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1904852055, now seen corresponding path program 1 times [2024-11-09 18:22:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435957334] [2024-11-09 18:22:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:44,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435957334] [2024-11-09 18:22:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435957334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559202517] [2024-11-09 18:22:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:44,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:44,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:44,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:44,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:22:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:44,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:22:44,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:44,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-09 18:22:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:44,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559202517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:44,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:44,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-09 18:22:44,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176079390] [2024-11-09 18:22:44,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:44,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:22:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:22:44,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:22:44,517 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:44,565 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-09 18:22:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:22:44,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 18:22:44,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:44,566 INFO L225 Difference]: With dead ends: 79 [2024-11-09 18:22:44,566 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 18:22:44,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:22:44,567 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:44,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 92 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 18:22:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2024-11-09 18:22:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-09 18:22:44,573 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 35 [2024-11-09 18:22:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:44,573 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-09 18:22:44,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-09 18:22:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 18:22:44,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:44,574 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:44,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:22:44,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:44,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:44,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1708338550, now seen corresponding path program 3 times [2024-11-09 18:22:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:44,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569363019] [2024-11-09 18:22:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:22:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569363019] [2024-11-09 18:22:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569363019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019481185] [2024-11-09 18:22:45,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:22:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:45,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:45,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:22:45,481 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:22:45,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:45,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 18:22:45,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:45,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:45,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:45,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:45,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 18:22:45,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:45,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:45,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:45,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 38 [2024-11-09 18:22:45,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-09 18:22:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:45,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:46,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-09 18:22:46,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2024-11-09 18:22:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019481185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:46,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2024-11-09 18:22:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660428682] [2024-11-09 18:22:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:46,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:22:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:22:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:22:46,213 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:46,779 INFO L93 Difference]: Finished difference Result 144 states and 170 transitions. [2024-11-09 18:22:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:22:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 18:22:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:46,780 INFO L225 Difference]: With dead ends: 144 [2024-11-09 18:22:46,781 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 18:22:46,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=1544, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 18:22:46,782 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 64 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:46,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 243 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:22:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 18:22:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2024-11-09 18:22:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-09 18:22:46,790 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 35 [2024-11-09 18:22:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:46,790 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-09 18:22:46,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-09 18:22:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 18:22:46,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:46,791 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:46,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:46,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:46,992 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:46,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:46,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1292757887, now seen corresponding path program 1 times [2024-11-09 18:22:46,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:46,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491533261] [2024-11-09 18:22:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:46,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:22:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491533261] [2024-11-09 18:22:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491533261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958265438] [2024-11-09 18:22:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:47,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:47,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:47,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:47,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:22:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:47,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 18:22:47,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:47,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:47,383 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 19 treesize of output 18 [2024-11-09 18:22:47,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:47,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-09 18:22:47,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:47,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-09 18:22:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:22:47,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:47,770 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 24 treesize of output 22 [2024-11-09 18:22:47,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-09 18:22:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:22:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958265438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:47,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:47,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 29 [2024-11-09 18:22:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109155053] [2024-11-09 18:22:47,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:47,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:22:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:22:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:22:47,792 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 29 states, 29 states have (on average 3.206896551724138) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:48,122 INFO L93 Difference]: Finished difference Result 187 states and 211 transitions. [2024-11-09 18:22:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 18:22:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.206896551724138) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 18:22:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:48,123 INFO L225 Difference]: With dead ends: 187 [2024-11-09 18:22:48,123 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 18:22:48,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:22:48,124 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 208 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:48,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 313 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:22:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 18:22:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 113. [2024-11-09 18:22:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 112 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2024-11-09 18:22:48,135 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 39 [2024-11-09 18:22:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:48,135 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2024-11-09 18:22:48,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.206896551724138) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2024-11-09 18:22:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 18:22:48,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:48,136 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:48,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:48,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:48,338 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:48,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1772318154, now seen corresponding path program 4 times [2024-11-09 18:22:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953888969] [2024-11-09 18:22:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953888969] [2024-11-09 18:22:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953888969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764943568] [2024-11-09 18:22:48,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:22:48,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:48,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:48,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:22:48,509 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:22:48,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:48,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:22:48,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:48,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764943568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:48,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:22:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138864904] [2024-11-09 18:22:48,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:48,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:22:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:22:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:22:48,627 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:48,825 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2024-11-09 18:22:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:22:48,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 18:22:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:48,826 INFO L225 Difference]: With dead ends: 194 [2024-11-09 18:22:48,826 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 18:22:48,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:22:48,827 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 114 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:48,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 241 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:48,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 18:22:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 113. [2024-11-09 18:22:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 112 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2024-11-09 18:22:48,841 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 39 [2024-11-09 18:22:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:48,841 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2024-11-09 18:22:48,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2024-11-09 18:22:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:22:48,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:48,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:48,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:22:49,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:49,043 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 598223046, now seen corresponding path program 2 times [2024-11-09 18:22:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002616495] [2024-11-09 18:22:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:49,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:22:49,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:49,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002616495] [2024-11-09 18:22:49,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002616495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:49,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984064606] [2024-11-09 18:22:49,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:49,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:49,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:49,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:49,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:22:49,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:49,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:49,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:22:49,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:22:49,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:22:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984064606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:49,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:22:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293698280] [2024-11-09 18:22:49,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:49,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:22:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:22:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:22:49,340 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:49,451 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2024-11-09 18:22:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:22:49,451 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:22:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:49,452 INFO L225 Difference]: With dead ends: 167 [2024-11-09 18:22:49,452 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 18:22:49,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:22:49,454 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:49,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 128 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 18:22:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2024-11-09 18:22:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 82 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-11-09 18:22:49,469 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 43 [2024-11-09 18:22:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:49,469 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-11-09 18:22:49,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-11-09 18:22:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:22:49,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:49,470 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:49,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:22:49,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 18:22:49,671 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:49,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1238266996, now seen corresponding path program 2 times [2024-11-09 18:22:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761822712] [2024-11-09 18:22:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 18:22:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761822712] [2024-11-09 18:22:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761822712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235703096] [2024-11-09 18:22:49,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:49,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:49,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:49,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:49,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:22:49,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:49,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:49,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:22:49,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:49,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 18:22:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 18:22:49,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 18:22:49,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235703096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:49,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:49,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-09 18:22:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948454755] [2024-11-09 18:22:49,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:49,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:22:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:22:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:22:49,818 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:49,848 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2024-11-09 18:22:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:22:49,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:22:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:49,849 INFO L225 Difference]: With dead ends: 118 [2024-11-09 18:22:49,850 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 18:22:49,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:22:49,851 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:49,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 18:22:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2024-11-09 18:22:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2024-11-09 18:22:49,862 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 43 [2024-11-09 18:22:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:49,863 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2024-11-09 18:22:49,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2024-11-09 18:22:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:22:49,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:49,864 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:49,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:22:50,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:50,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:50,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 241194643, now seen corresponding path program 5 times [2024-11-09 18:22:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665092477] [2024-11-09 18:22:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:22:50,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:50,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665092477] [2024-11-09 18:22:50,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665092477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:50,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847742001] [2024-11-09 18:22:50,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:22:50,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:50,919 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:50,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:22:51,006 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:22:51,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:51,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 18:22:51,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:51,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:51,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:22:51,048 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 19 treesize of output 18 [2024-11-09 18:22:51,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:51,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:22:51,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:51,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:51,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:51,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:51,926 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 96 treesize of output 90 [2024-11-09 18:22:51,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:51,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 10743 treesize of output 10103 [2024-11-09 18:22:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847742001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:51,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 41 [2024-11-09 18:22:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390530585] [2024-11-09 18:22:51,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:51,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 18:22:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 18:22:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1484, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:22:51,993 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:53,251 INFO L93 Difference]: Finished difference Result 290 states and 320 transitions. [2024-11-09 18:22:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 18:22:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:22:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:53,257 INFO L225 Difference]: With dead ends: 290 [2024-11-09 18:22:53,258 INFO L226 Difference]: Without dead ends: 236 [2024-11-09 18:22:53,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=410, Invalid=3750, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 18:22:53,265 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 165 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:53,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 958 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:22:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-09 18:22:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 120. [2024-11-09 18:22:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 119 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2024-11-09 18:22:53,296 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 43 [2024-11-09 18:22:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:53,296 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2024-11-09 18:22:53,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2024-11-09 18:22:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:22:53,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:53,298 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:53,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:22:53,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:22:53,503 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:53,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash 697246675, now seen corresponding path program 6 times [2024-11-09 18:22:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889740156] [2024-11-09 18:22:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:22:53,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889740156] [2024-11-09 18:22:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889740156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736369998] [2024-11-09 18:22:53,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:22:53,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:53,747 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:53,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:22:53,861 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 18:22:53,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:53,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:22:53,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:22:53,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:22:54,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736369998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:54,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:54,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:22:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598226193] [2024-11-09 18:22:54,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:54,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:22:54,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:22:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:22:54,093 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:54,461 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2024-11-09 18:22:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:22:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 18:22:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:54,462 INFO L225 Difference]: With dead ends: 218 [2024-11-09 18:22:54,462 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 18:22:54,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:22:54,463 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 133 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:54,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 326 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:22:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 18:22:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2024-11-09 18:22:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2024-11-09 18:22:54,473 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 47 [2024-11-09 18:22:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:54,474 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2024-11-09 18:22:54,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2024-11-09 18:22:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:22:54,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:54,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:54,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:22:54,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:22:54,680 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:54,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1360817724, now seen corresponding path program 3 times [2024-11-09 18:22:54,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:54,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527824213] [2024-11-09 18:22:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:22:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527824213] [2024-11-09 18:22:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527824213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037076286] [2024-11-09 18:22:55,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:22:55,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:55,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:55,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:22:55,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 18:22:55,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:55,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 18:22:55,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:55,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 18:22:55,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:55,452 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 27 treesize of output 11 [2024-11-09 18:22:55,486 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-09 18:22:55,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 18:22:55,581 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-09 18:22:55,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 34 [2024-11-09 18:22:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:22:55,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:22:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037076286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:56,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:56,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 20] total 50 [2024-11-09 18:22:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812068016] [2024-11-09 18:22:56,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:56,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 18:22:56,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:56,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 18:22:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=2035, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:22:56,434 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:59,350 INFO L93 Difference]: Finished difference Result 339 states and 364 transitions. [2024-11-09 18:22:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-09 18:22:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:22:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:59,352 INFO L225 Difference]: With dead ends: 339 [2024-11-09 18:22:59,352 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 18:22:59,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4168 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1994, Invalid=10438, Unknown=0, NotChecked=0, Total=12432 [2024-11-09 18:22:59,354 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 720 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:59,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1143 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:22:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 18:22:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 129. [2024-11-09 18:22:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.1015625) internal successors, (141), 128 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2024-11-09 18:22:59,368 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 51 [2024-11-09 18:22:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:59,368 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2024-11-09 18:22:59,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.58) internal successors, (129), 50 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2024-11-09 18:22:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:22:59,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:59,369 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:59,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:59,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:22:59,570 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:59,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1689781708, now seen corresponding path program 2 times [2024-11-09 18:22:59,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:59,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725944502] [2024-11-09 18:22:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:23:00,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725944502] [2024-11-09 18:23:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725944502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796306417] [2024-11-09 18:23:00,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:23:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:00,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:00,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:23:00,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:23:00,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:00,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 18:23:00,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:00,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:00,215 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 19 treesize of output 18 [2024-11-09 18:23:00,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:00,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-09 18:23:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:00,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:00,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2024-11-09 18:23:08,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:08,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 45 [2024-11-09 18:23:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:08,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 38 [2024-11-09 18:23:08,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:08,897 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2024-11-09 18:23:08,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 43 [2024-11-09 18:23:09,269 INFO L349 Elim1Store]: treesize reduction 134, result has 44.6 percent of original size [2024-11-09 18:23:09,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 152 [2024-11-09 18:23:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:23:12,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:13,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2024-11-09 18:23:13,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-09 18:23:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 28 refuted. 3 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 18:23:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796306417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:13,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:13,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 36 [2024-11-09 18:23:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834289763] [2024-11-09 18:23:13,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:13,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 18:23:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 18:23:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1033, Unknown=5, NotChecked=0, Total=1260 [2024-11-09 18:23:13,709 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:17,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 18:23:21,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 18:23:25,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 18:23:26,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:26,166 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2024-11-09 18:23:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:23:26,166 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:23:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:26,167 INFO L225 Difference]: With dead ends: 159 [2024-11-09 18:23:26,167 INFO L226 Difference]: Without dead ends: 156 [2024-11-09 18:23:26,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=289, Invalid=1428, Unknown=5, NotChecked=0, Total=1722 [2024-11-09 18:23:26,168 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 75 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:26,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 394 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 459 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 18:23:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-09 18:23:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 130. [2024-11-09 18:23:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 129 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2024-11-09 18:23:26,183 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 51 [2024-11-09 18:23:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:26,183 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2024-11-09 18:23:26,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2024-11-09 18:23:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:23:26,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:26,184 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:26,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:23:26,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:23:26,388 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:26,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1132015184, now seen corresponding path program 7 times [2024-11-09 18:23:26,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831686585] [2024-11-09 18:23:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:23:27,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831686585] [2024-11-09 18:23:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831686585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927989368] [2024-11-09 18:23:27,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:23:27,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:27,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:27,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:23:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:27,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 18:23:27,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:27,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:27,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:27,910 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 19 treesize of output 18 [2024-11-09 18:23:27,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:27,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:23:27,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:27,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:23:28,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:28,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:28,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:28,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:23:28,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:28,593 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 160 treesize of output 152 [2024-11-09 18:23:28,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:28,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1331435 treesize of output 1274091 [2024-11-09 18:23:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:23:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927989368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:28,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 34 [2024-11-09 18:23:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630982294] [2024-11-09 18:23:28,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:28,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 18:23:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 18:23:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 18:23:28,748 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:29,296 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2024-11-09 18:23:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:23:29,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:23:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:29,297 INFO L225 Difference]: With dead ends: 241 [2024-11-09 18:23:29,298 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 18:23:29,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=1504, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 18:23:29,299 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 126 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:29,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 469 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:23:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 18:23:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 147. [2024-11-09 18:23:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0890410958904109) internal successors, (159), 146 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 159 transitions. [2024-11-09 18:23:29,316 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 159 transitions. Word has length 51 [2024-11-09 18:23:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:29,316 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 159 transitions. [2024-11-09 18:23:29,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 159 transitions. [2024-11-09 18:23:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 18:23:29,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:29,317 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:29,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:23:29,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:29,518 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:29,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1800251409, now seen corresponding path program 8 times [2024-11-09 18:23:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920011546] [2024-11-09 18:23:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:23:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920011546] [2024-11-09 18:23:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920011546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522603457] [2024-11-09 18:23:29,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:23:29,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:29,648 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:29,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:23:29,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:23:29,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:29,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:23:29,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:23:29,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:23:29,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522603457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:29,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:29,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:23:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50666081] [2024-11-09 18:23:29,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:29,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:23:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:23:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:23:29,885 INFO L87 Difference]: Start difference. First operand 147 states and 159 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:30,105 INFO L93 Difference]: Finished difference Result 335 states and 359 transitions. [2024-11-09 18:23:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:23:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 18:23:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:30,107 INFO L225 Difference]: With dead ends: 335 [2024-11-09 18:23:30,107 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 18:23:30,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:23:30,107 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 297 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:30,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 241 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:23:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 18:23:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 174. [2024-11-09 18:23:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.092485549132948) internal successors, (189), 173 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 189 transitions. [2024-11-09 18:23:30,132 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 189 transitions. Word has length 53 [2024-11-09 18:23:30,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:30,133 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 189 transitions. [2024-11-09 18:23:30,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 189 transitions. [2024-11-09 18:23:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 18:23:30,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:30,133 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:30,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:23:30,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 18:23:30,334 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:30,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1891001137, now seen corresponding path program 9 times [2024-11-09 18:23:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215275167] [2024-11-09 18:23:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:23:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215275167] [2024-11-09 18:23:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215275167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108791582] [2024-11-09 18:23:30,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:23:30,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:30,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:30,450 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:30,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:23:30,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 18:23:30,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:30,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:23:30,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:23:30,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:23:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108791582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:30,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:30,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:23:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11977061] [2024-11-09 18:23:30,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:30,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:23:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:23:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:23:30,790 INFO L87 Difference]: Start difference. First operand 174 states and 189 transitions. Second operand has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:31,120 INFO L93 Difference]: Finished difference Result 251 states and 264 transitions. [2024-11-09 18:23:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:23:31,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 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 53 [2024-11-09 18:23:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:31,121 INFO L225 Difference]: With dead ends: 251 [2024-11-09 18:23:31,121 INFO L226 Difference]: Without dead ends: 186 [2024-11-09 18:23:31,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 89 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:23:31,122 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 196 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:31,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 476 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:23:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-09 18:23:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 143. [2024-11-09 18:23:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0633802816901408) internal successors, (151), 142 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2024-11-09 18:23:31,140 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 53 [2024-11-09 18:23:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:31,140 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2024-11-09 18:23:31,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2024-11-09 18:23:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 18:23:31,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:31,141 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:31,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:23:31,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:23:31,346 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:31,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1760345805, now seen corresponding path program 10 times [2024-11-09 18:23:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:31,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521337873] [2024-11-09 18:23:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:31,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:23:33,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521337873] [2024-11-09 18:23:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521337873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:33,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208083352] [2024-11-09 18:23:33,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:23:33,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:33,290 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:33,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:23:33,436 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:23:33,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:33,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 18:23:33,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:33,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:33,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 18:23:33,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2024-11-09 18:23:33,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:33,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2024-11-09 18:23:33,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:33,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2024-11-09 18:23:33,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:33,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2024-11-09 18:23:33,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 18:23:33,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-09 18:23:33,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-09 18:23:34,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-09 18:23:34,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-09 18:23:34,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:34,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:34,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 88 treesize of output 148 [2024-11-09 18:23:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 36 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:23:34,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208083352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:35,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 24] total 54 [2024-11-09 18:23:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348085495] [2024-11-09 18:23:35,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:35,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 18:23:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 18:23:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2453, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 18:23:35,267 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 54 states, 54 states have (on average 2.2962962962962963) internal successors, (124), 54 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:39,489 INFO L93 Difference]: Finished difference Result 501 states and 540 transitions. [2024-11-09 18:23:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-09 18:23:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2962962962962963) internal successors, (124), 54 states have internal predecessors, (124), 0 states have call successors, (0), 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 59 [2024-11-09 18:23:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:39,492 INFO L225 Difference]: With dead ends: 501 [2024-11-09 18:23:39,492 INFO L226 Difference]: Without dead ends: 434 [2024-11-09 18:23:39,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4053 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2108, Invalid=13144, Unknown=0, NotChecked=0, Total=15252 [2024-11-09 18:23:39,496 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 655 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:39,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 960 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:23:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-09 18:23:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 184. [2024-11-09 18:23:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.098360655737705) internal successors, (201), 183 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 201 transitions. [2024-11-09 18:23:39,542 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 201 transitions. Word has length 59 [2024-11-09 18:23:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:39,543 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 201 transitions. [2024-11-09 18:23:39,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2962962962962963) internal successors, (124), 54 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 201 transitions. [2024-11-09 18:23:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:23:39,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:39,544 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:39,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 18:23:39,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:39,745 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:39,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 453318665, now seen corresponding path program 4 times [2024-11-09 18:23:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303032749] [2024-11-09 18:23:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303032749] [2024-11-09 18:23:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303032749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108591887] [2024-11-09 18:23:40,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:23:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:40,491 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:40,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:23:40,603 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:23:40,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:40,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 18:23:40,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:40,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 18:23:40,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 18:23:40,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 18:23:40,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 18:23:40,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-09 18:23:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:23:41,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:23:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108591887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:41,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 24] total 61 [2024-11-09 18:23:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311445] [2024-11-09 18:23:41,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:41,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-09 18:23:41,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-09 18:23:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=3261, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 18:23:41,846 INFO L87 Difference]: Start difference. First operand 184 states and 201 transitions. Second operand has 61 states, 61 states have (on average 2.622950819672131) internal successors, (160), 61 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:44,859 INFO L93 Difference]: Finished difference Result 277 states and 297 transitions. [2024-11-09 18:23:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-09 18:23:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.622950819672131) internal successors, (160), 61 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 18:23:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:44,860 INFO L225 Difference]: With dead ends: 277 [2024-11-09 18:23:44,860 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 18:23:44,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4530 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1536, Invalid=12984, Unknown=0, NotChecked=0, Total=14520 [2024-11-09 18:23:44,863 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 372 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:44,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 946 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:23:44,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 18:23:44,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 166. [2024-11-09 18:23:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.1333333333333333) internal successors, (187), 165 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 187 transitions. [2024-11-09 18:23:44,909 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 187 transitions. Word has length 63 [2024-11-09 18:23:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:44,909 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 187 transitions. [2024-11-09 18:23:44,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.622950819672131) internal successors, (160), 61 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 187 transitions. [2024-11-09 18:23:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:23:44,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:44,910 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:44,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:23:45,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:45,114 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:45,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:45,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1833615367, now seen corresponding path program 5 times [2024-11-09 18:23:45,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:45,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602555325] [2024-11-09 18:23:45,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:45,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 81 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:23:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602555325] [2024-11-09 18:23:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602555325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503636403] [2024-11-09 18:23:46,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:23:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:46,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:46,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:23:46,802 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:23:46,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:46,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 18:23:46,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:46,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:46,838 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 19 treesize of output 18 [2024-11-09 18:23:46,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:46,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:23:46,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:46,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:23:46,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:46,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 18:23:47,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:47,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 44 [2024-11-09 18:23:47,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:47,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-09 18:23:47,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:47,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2024-11-09 18:23:47,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:47,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2024-11-09 18:23:47,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:47,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-09 18:23:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:23:47,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:48,354 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 48 treesize of output 46 [2024-11-09 18:23:48,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2024-11-09 18:23:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:23:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503636403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:48,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 21] total 52 [2024-11-09 18:23:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875513089] [2024-11-09 18:23:48,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:48,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 18:23:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 18:23:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 18:23:48,408 INFO L87 Difference]: Start difference. First operand 166 states and 187 transitions. Second operand has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 52 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:48,931 INFO L93 Difference]: Finished difference Result 203 states and 224 transitions. [2024-11-09 18:23:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 18:23:48,931 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 52 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 18:23:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:48,933 INFO L225 Difference]: With dead ends: 203 [2024-11-09 18:23:48,933 INFO L226 Difference]: Without dead ends: 200 [2024-11-09 18:23:48,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=559, Invalid=3101, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 18:23:48,934 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 103 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:48,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 503 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:23:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-09 18:23:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 166. [2024-11-09 18:23:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.121212121212121) internal successors, (185), 165 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2024-11-09 18:23:48,982 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 63 [2024-11-09 18:23:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:48,983 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2024-11-09 18:23:48,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 52 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2024-11-09 18:23:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 18:23:48,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:48,984 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:48,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 18:23:49,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:49,189 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:49,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -222636789, now seen corresponding path program 11 times [2024-11-09 18:23:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236873150] [2024-11-09 18:23:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:23:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236873150] [2024-11-09 18:23:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236873150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675842205] [2024-11-09 18:23:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:23:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:49,419 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:49,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:23:50,824 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 18:23:50,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:50,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:23:50,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:23:50,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:23:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675842205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:51,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:51,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:23:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624894684] [2024-11-09 18:23:51,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:51,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:23:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:23:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:23:51,103 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:51,586 INFO L93 Difference]: Finished difference Result 425 states and 462 transitions. [2024-11-09 18:23:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:23:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 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 65 [2024-11-09 18:23:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:51,587 INFO L225 Difference]: With dead ends: 425 [2024-11-09 18:23:51,587 INFO L226 Difference]: Without dead ends: 307 [2024-11-09 18:23:51,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 111 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:23:51,588 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 330 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:51,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 264 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:23:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-09 18:23:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 244. [2024-11-09 18:23:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.102880658436214) internal successors, (268), 243 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 268 transitions. [2024-11-09 18:23:51,646 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 268 transitions. Word has length 65 [2024-11-09 18:23:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:51,646 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 268 transitions. [2024-11-09 18:23:51,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 268 transitions. [2024-11-09 18:23:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:23:51,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:51,647 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:51,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 18:23:51,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 18:23:51,848 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:51,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1462747670, now seen corresponding path program 12 times [2024-11-09 18:23:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499106158] [2024-11-09 18:23:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:23:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499106158] [2024-11-09 18:23:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499106158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733866829] [2024-11-09 18:23:53,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:23:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:53,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:53,407 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:53,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:23:53,707 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:23:53,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:53,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-09 18:23:53,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:53,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:23:53,845 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 19 treesize of output 18 [2024-11-09 18:23:53,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:53,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:23:53,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:53,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:23:54,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:54,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 18:23:54,167 INFO L349 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2024-11-09 18:23:54,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 49 treesize of output 60 [2024-11-09 18:23:54,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:54,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:54,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:54,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:54,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:23:54,857 INFO L349 Elim1Store]: treesize reduction 40, result has 56.0 percent of original size [2024-11-09 18:23:54,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 82 [2024-11-09 18:23:54,891 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 18:23:54,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-09 18:23:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:55,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:56,982 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 236 treesize of output 226 [2024-11-09 18:23:57,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:57,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 607427159 treesize of output 588552791 [2024-11-09 18:23:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733866829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:57,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 28] total 73 [2024-11-09 18:23:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437053815] [2024-11-09 18:23:57,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:57,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-09 18:23:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-09 18:23:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 18:23:57,281 INFO L87 Difference]: Start difference. First operand 244 states and 268 transitions. Second operand has 73 states, 73 states have (on average 2.232876712328767) internal successors, (163), 73 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:24:03,025 INFO L93 Difference]: Finished difference Result 579 states and 633 transitions. [2024-11-09 18:24:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-09 18:24:03,026 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.232876712328767) internal successors, (163), 73 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 18:24:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:24:03,027 INFO L225 Difference]: With dead ends: 579 [2024-11-09 18:24:03,027 INFO L226 Difference]: Without dead ends: 430 [2024-11-09 18:24:03,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4978 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1985, Invalid=19477, Unknown=0, NotChecked=0, Total=21462 [2024-11-09 18:24:03,029 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 482 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:24:03,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1855 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 18:24:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-09 18:24:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 295. [2024-11-09 18:24:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.0952380952380953) internal successors, (322), 294 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2024-11-09 18:24:03,131 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 67 [2024-11-09 18:24:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:24:03,131 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2024-11-09 18:24:03,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.232876712328767) internal successors, (163), 73 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2024-11-09 18:24:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:24:03,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:24:03,132 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:24:03,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 18:24:03,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:24:03,337 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:24:03,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:24:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1381366614, now seen corresponding path program 13 times [2024-11-09 18:24:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:24:03,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525315009] [2024-11-09 18:24:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:24:03,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:24:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:24:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 30 proven. 98 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:24:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:24:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525315009] [2024-11-09 18:24:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525315009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:24:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887897069] [2024-11-09 18:24:03,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:24:03,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:24:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:24:03,592 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:24:03,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 18:24:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:24:03,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:24:03,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:24:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:24:03,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:24:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:24:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887897069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:24:04,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:24:04,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:24:04,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141039420] [2024-11-09 18:24:04,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:24:04,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:24:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:24:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:24:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:24:04,100 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:24:04,839 INFO L93 Difference]: Finished difference Result 519 states and 552 transitions. [2024-11-09 18:24:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:24:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 18:24:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:24:04,842 INFO L225 Difference]: With dead ends: 519 [2024-11-09 18:24:04,842 INFO L226 Difference]: Without dead ends: 366 [2024-11-09 18:24:04,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:24:04,843 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 267 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:24:04,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 746 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:24:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-09 18:24:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 234. [2024-11-09 18:24:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.055793991416309) internal successors, (246), 233 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 246 transitions. [2024-11-09 18:24:04,921 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 246 transitions. Word has length 71 [2024-11-09 18:24:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:24:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 246 transitions. [2024-11-09 18:24:04,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:24:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 246 transitions. [2024-11-09 18:24:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 18:24:04,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:24:04,923 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:24:04,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 18:24:05,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:24:05,124 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:24:05,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:24:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 847699534, now seen corresponding path program 6 times [2024-11-09 18:24:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:24:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502530612] [2024-11-09 18:24:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:24:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:24:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:24:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:24:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:24:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502530612] [2024-11-09 18:24:05,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502530612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:24:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578539557] [2024-11-09 18:24:05,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:24:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:24:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:24:05,883 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:24:05,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 18:24:06,087 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:24:06,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:24:06,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-09 18:24:06,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:24:06,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 18:24:06,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:24:06,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 18:24:06,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:24:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:24:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:24:06,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:24:06,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32