./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f3a36748f32ca088af5a89c176902d6a78b8f206b767e4775b8a1d3a36bb37f --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:18:36,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:18:36,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:18:36,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:18:36,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:18:36,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:18:36,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:18:36,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:18:36,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:18:36,410 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:18:36,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:18:36,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:18:36,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:18:36,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:18:36,412 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:18:36,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:18:36,413 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:18:36,413 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:18:36,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:18:36,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:18:36,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:18:36,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:18:36,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:18:36,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:18:36,415 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:18:36,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:18:36,416 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:18:36,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:18:36,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:18:36,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:18:36,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:18:36,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:18:36,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:18:36,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:18:36,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:18:36,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:18:36,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:18:36,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:18:36,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:18:36,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:18:36,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:18:36,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:18:36,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3a36748f32ca088af5a89c176902d6a78b8f206b767e4775b8a1d3a36bb37f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:18:36,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:18:36,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:18:36,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:18:36,655 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:18:36,656 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:18:36,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2023-11-22 23:18:37,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:18:37,901 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:18:37,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2023-11-22 23:18:37,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fd09f34/57cbc4dd95394472846b26911c48eca8/FLAG552354293 [2023-11-22 23:18:37,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fd09f34/57cbc4dd95394472846b26911c48eca8 [2023-11-22 23:18:37,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:18:37,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:18:37,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:18:37,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:18:37,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:18:37,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:37" (1/1) ... [2023-11-22 23:18:37,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0fab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:37, skipping insertion in model container [2023-11-22 23:18:37,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:37" (1/1) ... [2023-11-22 23:18:37,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:18:38,197 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:18:38,287 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33510,33523] [2023-11-22 23:18:38,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:18:38,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:18:38,421 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:18:38,434 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33510,33523] [2023-11-22 23:18:38,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:18:38,522 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:18:38,522 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:18:38,528 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:18:38,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38 WrapperNode [2023-11-22 23:18:38,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:18:38,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:18:38,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:18:38,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:18:38,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,611 INFO L138 Inliner]: procedures = 178, calls = 282, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1337 [2023-11-22 23:18:38,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:18:38,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:18:38,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:18:38,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:18:38,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:18:38,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:18:38,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:18:38,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:18:38,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (1/1) ... [2023-11-22 23:18:38,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:18:38,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:38,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:18:38,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:18:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:18:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-22 23:18:38,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-22 23:18:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:18:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-22 23:18:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:18:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:18:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:18:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:18:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:18:38,944 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:18:38,947 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:18:39,948 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:18:39,970 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:18:39,970 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-22 23:18:39,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:39 BoogieIcfgContainer [2023-11-22 23:18:39,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:18:39,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:18:39,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:18:39,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:18:39,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:37" (1/3) ... [2023-11-22 23:18:39,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1be0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:39, skipping insertion in model container [2023-11-22 23:18:39,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:38" (2/3) ... [2023-11-22 23:18:39,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1be0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:39, skipping insertion in model container [2023-11-22 23:18:39,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:39" (3/3) ... [2023-11-22 23:18:39,977 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2023-11-22 23:18:39,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:18:39,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:18:40,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:18:40,030 INFO L357 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, mHoare=true, 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;@b9f6986, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:18:40,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:18:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 347 states have (on average 1.7031700288184437) internal successors, (591), 349 states have internal predecessors, (591), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 23:18:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 23:18:40,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:40,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:40,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:40,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2068310432, now seen corresponding path program 1 times [2023-11-22 23:18:40,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:40,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660386587] [2023-11-22 23:18:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:40,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:18:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660386587] [2023-11-22 23:18:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660386587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:40,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:18:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912118810] [2023-11-22 23:18:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 23:18:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 23:18:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:18:40,209 INFO L87 Difference]: Start difference. First operand has 356 states, 347 states have (on average 1.7031700288184437) internal successors, (591), 349 states have internal predecessors, (591), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:40,281 INFO L93 Difference]: Finished difference Result 710 states and 1201 transitions. [2023-11-22 23:18:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 23:18:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-22 23:18:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:40,296 INFO L225 Difference]: With dead ends: 710 [2023-11-22 23:18:40,296 INFO L226 Difference]: Without dead ends: 353 [2023-11-22 23:18:40,301 INFO L412 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 [2023-11-22 23:18:40,304 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:40,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:18:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-22 23:18:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-22 23:18:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 345 states have (on average 1.5043478260869565) internal successors, (519), 346 states have internal predecessors, (519), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 23:18:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 529 transitions. [2023-11-22 23:18:40,364 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 529 transitions. Word has length 11 [2023-11-22 23:18:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:40,364 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 529 transitions. [2023-11-22 23:18:40,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 529 transitions. [2023-11-22 23:18:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-22 23:18:40,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:40,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:40,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:18:40,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:40,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash -941326181, now seen corresponding path program 1 times [2023-11-22 23:18:40,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:40,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657341710] [2023-11-22 23:18:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:18:40,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:40,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657341710] [2023-11-22 23:18:40,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657341710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:40,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:40,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:18:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871393685] [2023-11-22 23:18:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:18:40,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:18:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:18:40,510 INFO L87 Difference]: Start difference. First operand 353 states and 529 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:40,721 INFO L93 Difference]: Finished difference Result 963 states and 1463 transitions. [2023-11-22 23:18:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:18:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-22 23:18:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:40,725 INFO L225 Difference]: With dead ends: 963 [2023-11-22 23:18:40,725 INFO L226 Difference]: Without dead ends: 610 [2023-11-22 23:18:40,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:18:40,727 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 401 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:40,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1493 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:18:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-11-22 23:18:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 609. [2023-11-22 23:18:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 600 states have (on average 1.53) internal successors, (918), 602 states have internal predecessors, (918), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 930 transitions. [2023-11-22 23:18:40,751 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 930 transitions. Word has length 13 [2023-11-22 23:18:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:40,751 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 930 transitions. [2023-11-22 23:18:40,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 930 transitions. [2023-11-22 23:18:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 23:18:40,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:40,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:40,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:18:40,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:40,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -897413951, now seen corresponding path program 1 times [2023-11-22 23:18:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:40,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362992282] [2023-11-22 23:18:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:18:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362992282] [2023-11-22 23:18:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362992282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:40,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:18:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143928820] [2023-11-22 23:18:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:18:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:18:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:18:40,954 INFO L87 Difference]: Start difference. First operand 609 states and 930 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:41,035 INFO L93 Difference]: Finished difference Result 861 states and 1300 transitions. [2023-11-22 23:18:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:18:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-22 23:18:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:41,037 INFO L225 Difference]: With dead ends: 861 [2023-11-22 23:18:41,037 INFO L226 Difference]: Without dead ends: 545 [2023-11-22 23:18:41,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:18:41,039 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 99 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:41,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1215 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:18:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-22 23:18:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2023-11-22 23:18:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 534 states have (on average 1.4644194756554307) internal successors, (782), 536 states have internal predecessors, (782), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 794 transitions. [2023-11-22 23:18:41,051 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 794 transitions. Word has length 67 [2023-11-22 23:18:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:41,052 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 794 transitions. [2023-11-22 23:18:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 794 transitions. [2023-11-22 23:18:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 23:18:41,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:41,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:18:41,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:41,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1933652941, now seen corresponding path program 1 times [2023-11-22 23:18:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470133724] [2023-11-22 23:18:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:18:41,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:41,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470133724] [2023-11-22 23:18:41,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470133724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:41,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:18:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494790295] [2023-11-22 23:18:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:18:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:18:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:18:41,335 INFO L87 Difference]: Start difference. First operand 543 states and 794 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:41,578 INFO L93 Difference]: Finished difference Result 934 states and 1338 transitions. [2023-11-22 23:18:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:18:41,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-22 23:18:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:41,581 INFO L225 Difference]: With dead ends: 934 [2023-11-22 23:18:41,581 INFO L226 Difference]: Without dead ends: 681 [2023-11-22 23:18:41,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:18:41,582 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 340 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1675 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:18:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-11-22 23:18:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 542. [2023-11-22 23:18:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 533 states have (on average 1.4634146341463414) internal successors, (780), 535 states have internal predecessors, (780), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 792 transitions. [2023-11-22 23:18:41,594 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 792 transitions. Word has length 67 [2023-11-22 23:18:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:41,594 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 792 transitions. [2023-11-22 23:18:41,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:18:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 792 transitions. [2023-11-22 23:18:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-22 23:18:41,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:41,596 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:41,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:18:41,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:41,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1262464414, now seen corresponding path program 1 times [2023-11-22 23:18:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:41,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849697216] [2023-11-22 23:18:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:41,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:41,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319713935] [2023-11-22 23:18:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:41,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:41,639 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) [2023-11-22 23:18:41,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 23:18:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:41,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:18:41,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:41,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849697216] [2023-11-22 23:18:41,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:41,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319713935] [2023-11-22 23:18:41,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319713935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:41,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:41,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:18:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728815469] [2023-11-22 23:18:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:41,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:18:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:41,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:18:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:18:41,940 INFO L87 Difference]: Start difference. First operand 542 states and 792 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:41,993 INFO L93 Difference]: Finished difference Result 1073 states and 1563 transitions. [2023-11-22 23:18:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:18:41,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-22 23:18:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:41,995 INFO L225 Difference]: With dead ends: 1073 [2023-11-22 23:18:41,995 INFO L226 Difference]: Without dead ends: 584 [2023-11-22 23:18:41,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:18:41,997 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 9 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:41,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 850 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:18:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-22 23:18:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2023-11-22 23:18:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 573 states have (on average 1.431064572425829) internal successors, (820), 575 states have internal predecessors, (820), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 832 transitions. [2023-11-22 23:18:42,006 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 832 transitions. Word has length 102 [2023-11-22 23:18:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:42,007 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 832 transitions. [2023-11-22 23:18:42,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 832 transitions. [2023-11-22 23:18:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-22 23:18:42,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:42,008 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:42,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:42,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash -535184102, now seen corresponding path program 1 times [2023-11-22 23:18:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359446816] [2023-11-22 23:18:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:42,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911690425] [2023-11-22 23:18:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:42,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:42,312 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) [2023-11-22 23:18:42,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 23:18:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:42,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:18:42,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:42,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359446816] [2023-11-22 23:18:42,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911690425] [2023-11-22 23:18:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911690425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:42,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:18:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97764849] [2023-11-22 23:18:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:18:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:18:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:18:42,624 INFO L87 Difference]: Start difference. First operand 582 states and 832 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:42,675 INFO L93 Difference]: Finished difference Result 1067 states and 1528 transitions. [2023-11-22 23:18:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:18:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-22 23:18:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:42,677 INFO L225 Difference]: With dead ends: 1067 [2023-11-22 23:18:42,677 INFO L226 Difference]: Without dead ends: 556 [2023-11-22 23:18:42,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:18:42,678 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 165 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:42,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1123 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:18:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-11-22 23:18:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2023-11-22 23:18:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 545 states have (on average 1.4275229357798165) internal successors, (778), 547 states have internal predecessors, (778), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 790 transitions. [2023-11-22 23:18:42,687 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 790 transitions. Word has length 102 [2023-11-22 23:18:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:42,688 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 790 transitions. [2023-11-22 23:18:42,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 790 transitions. [2023-11-22 23:18:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-22 23:18:42,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:42,689 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:42,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:42,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-22 23:18:42,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:42,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1449035224, now seen corresponding path program 1 times [2023-11-22 23:18:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:42,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734402917] [2023-11-22 23:18:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:42,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339607214] [2023-11-22 23:18:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:42,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:42,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:42,935 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) [2023-11-22 23:18:42,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 23:18:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:43,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 23:18:43,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:43,224 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 [2023-11-22 23:18:43,267 INFO L349 Elim1Store]: treesize reduction 122, result has 10.9 percent of original size [2023-11-22 23:18:43,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 84 [2023-11-22 23:18:43,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-22 23:18:43,380 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-22 23:18:43,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 23:18:43,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 26 [2023-11-22 23:18:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:43,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734402917] [2023-11-22 23:18:43,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339607214] [2023-11-22 23:18:43,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339607214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:43,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:43,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 23:18:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788093955] [2023-11-22 23:18:43,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:18:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:18:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:18:43,715 INFO L87 Difference]: Start difference. First operand 554 states and 790 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:44,779 INFO L93 Difference]: Finished difference Result 1209 states and 1712 transitions. [2023-11-22 23:18:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:18:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-22 23:18:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:44,783 INFO L225 Difference]: With dead ends: 1209 [2023-11-22 23:18:44,783 INFO L226 Difference]: Without dead ends: 737 [2023-11-22 23:18:44,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-22 23:18:44,785 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 594 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:44,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2409 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:18:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-11-22 23:18:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 586. [2023-11-22 23:18:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 577 states have (on average 1.4124783362218372) internal successors, (815), 579 states have internal predecessors, (815), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 827 transitions. [2023-11-22 23:18:44,798 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 827 transitions. Word has length 102 [2023-11-22 23:18:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:44,798 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 827 transitions. [2023-11-22 23:18:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 827 transitions. [2023-11-22 23:18:44,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-22 23:18:44,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:44,799 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:44,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:45,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:45,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:45,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1421969622, now seen corresponding path program 1 times [2023-11-22 23:18:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039232665] [2023-11-22 23:18:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:45,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523254579] [2023-11-22 23:18:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:45,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:45,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:45,057 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) [2023-11-22 23:18:45,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 23:18:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:45,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 23:18:45,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:45,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039232665] [2023-11-22 23:18:45,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523254579] [2023-11-22 23:18:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523254579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:18:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121718768] [2023-11-22 23:18:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:18:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:18:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:18:45,348 INFO L87 Difference]: Start difference. First operand 586 states and 827 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:45,426 INFO L93 Difference]: Finished difference Result 1258 states and 1815 transitions. [2023-11-22 23:18:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:18:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-22 23:18:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:45,428 INFO L225 Difference]: With dead ends: 1258 [2023-11-22 23:18:45,428 INFO L226 Difference]: Without dead ends: 774 [2023-11-22 23:18:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:18:45,430 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 148 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1276 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:18:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-22 23:18:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 609. [2023-11-22 23:18:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 600 states have (on average 1.395) internal successors, (837), 602 states have internal predecessors, (837), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 849 transitions. [2023-11-22 23:18:45,443 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 849 transitions. Word has length 102 [2023-11-22 23:18:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:45,443 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 849 transitions. [2023-11-22 23:18:45,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 849 transitions. [2023-11-22 23:18:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 23:18:45,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:45,444 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:45,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:45,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1826193038, now seen corresponding path program 1 times [2023-11-22 23:18:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184433936] [2023-11-22 23:18:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:45,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:45,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244497193] [2023-11-22 23:18:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:45,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:45,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:45,721 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) [2023-11-22 23:18:45,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 23:18:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:46,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-22 23:18:46,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:46,154 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 [2023-11-22 23:18:46,196 INFO L349 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2023-11-22 23:18:46,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 80 [2023-11-22 23:18:46,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 23:18:46,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 46 treesize of output 26 [2023-11-22 23:18:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:46,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184433936] [2023-11-22 23:18:46,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244497193] [2023-11-22 23:18:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244497193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 23:18:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502716880] [2023-11-22 23:18:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 23:18:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 23:18:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:18:46,746 INFO L87 Difference]: Start difference. First operand 609 states and 849 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:47,891 INFO L93 Difference]: Finished difference Result 1252 states and 1755 transitions. [2023-11-22 23:18:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 23:18:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2023-11-22 23:18:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:47,894 INFO L225 Difference]: With dead ends: 1252 [2023-11-22 23:18:47,894 INFO L226 Difference]: Without dead ends: 761 [2023-11-22 23:18:47,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-22 23:18:47,895 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 832 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:47,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2521 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:18:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-11-22 23:18:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 614. [2023-11-22 23:18:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 605 states have (on average 1.3950413223140496) internal successors, (844), 607 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 856 transitions. [2023-11-22 23:18:47,906 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 856 transitions. Word has length 103 [2023-11-22 23:18:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 856 transitions. [2023-11-22 23:18:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 856 transitions. [2023-11-22 23:18:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-22 23:18:47,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:47,909 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:47,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:48,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:48,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:48,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -718129379, now seen corresponding path program 1 times [2023-11-22 23:18:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:48,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553934910] [2023-11-22 23:18:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:48,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:48,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240869817] [2023-11-22 23:18:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:48,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:48,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:48,176 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) [2023-11-22 23:18:48,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 23:18:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:48,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-22 23:18:48,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:48,460 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 [2023-11-22 23:18:48,499 INFO L349 Elim1Store]: treesize reduction 122, result has 10.9 percent of original size [2023-11-22 23:18:48,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 84 [2023-11-22 23:18:48,508 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:48,509 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 18 [2023-11-22 23:18:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:48,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-22 23:18:48,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 23:18:48,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 26 [2023-11-22 23:18:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:48,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:48,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553934910] [2023-11-22 23:18:48,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:48,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240869817] [2023-11-22 23:18:48,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240869817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:48,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:48,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 23:18:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974248246] [2023-11-22 23:18:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 23:18:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 23:18:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:18:48,893 INFO L87 Difference]: Start difference. First operand 614 states and 856 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:50,905 INFO L93 Difference]: Finished difference Result 1256 states and 1760 transitions. [2023-11-22 23:18:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:18:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-11-22 23:18:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:50,907 INFO L225 Difference]: With dead ends: 1256 [2023-11-22 23:18:50,907 INFO L226 Difference]: Without dead ends: 765 [2023-11-22 23:18:50,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-11-22 23:18:50,909 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 613 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:50,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 3072 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-22 23:18:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-11-22 23:18:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 614. [2023-11-22 23:18:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 605 states have (on average 1.3933884297520662) internal successors, (843), 607 states have internal predecessors, (843), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 855 transitions. [2023-11-22 23:18:50,921 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 855 transitions. Word has length 104 [2023-11-22 23:18:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:50,922 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 855 transitions. [2023-11-22 23:18:50,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 855 transitions. [2023-11-22 23:18:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-22 23:18:50,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:50,923 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:50,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:51,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:51,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:51,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash -395816637, now seen corresponding path program 1 times [2023-11-22 23:18:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:51,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051107170] [2023-11-22 23:18:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:51,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:51,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:51,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041342191] [2023-11-22 23:18:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:51,168 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) [2023-11-22 23:18:51,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 23:18:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:51,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 23:18:51,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:18:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:18:51,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:18:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:18:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051107170] [2023-11-22 23:18:51,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:18:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041342191] [2023-11-22 23:18:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041342191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:18:51,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:18:51,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:18:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093799736] [2023-11-22 23:18:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:18:51,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:18:51,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:18:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:18:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:18:51,570 INFO L87 Difference]: Start difference. First operand 614 states and 855 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:18:51,806 INFO L93 Difference]: Finished difference Result 1129 states and 1580 transitions. [2023-11-22 23:18:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:18:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-11-22 23:18:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:18:51,809 INFO L225 Difference]: With dead ends: 1129 [2023-11-22 23:18:51,809 INFO L226 Difference]: Without dead ends: 634 [2023-11-22 23:18:51,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:18:51,812 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 10 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:18:51,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1459 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:18:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-22 23:18:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 630. [2023-11-22 23:18:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 621 states have (on average 1.3896940418679549) internal successors, (863), 623 states have internal predecessors, (863), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:18:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 875 transitions. [2023-11-22 23:18:51,824 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 875 transitions. Word has length 104 [2023-11-22 23:18:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:18:51,824 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 875 transitions. [2023-11-22 23:18:51,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:18:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 875 transitions. [2023-11-22 23:18:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-22 23:18:51,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:18:51,825 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:18:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 23:18:52,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:52,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:18:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:18:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 558123521, now seen corresponding path program 1 times [2023-11-22 23:18:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:18:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882023886] [2023-11-22 23:18:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:52,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:18:52,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:18:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803280762] [2023-11-22 23:18:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:18:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:18:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:18:52,094 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) [2023-11-22 23:18:52,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 23:18:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:18:52,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 23:18:52,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:03,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882023886] [2023-11-22 23:19:03,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803280762] [2023-11-22 23:19:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803280762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:03,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:03,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:19:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178632973] [2023-11-22 23:19:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:19:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:03,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:19:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:19:03,010 INFO L87 Difference]: Start difference. First operand 630 states and 875 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:05,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:05,100 INFO L93 Difference]: Finished difference Result 1152 states and 1609 transitions. [2023-11-22 23:19:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:19:05,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-11-22 23:19:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:05,103 INFO L225 Difference]: With dead ends: 1152 [2023-11-22 23:19:05,103 INFO L226 Difference]: Without dead ends: 650 [2023-11-22 23:19:05,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:19:05,104 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 16 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2027 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 23:19:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-22 23:19:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2023-11-22 23:19:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 633 states have (on average 1.3886255924170616) internal successors, (879), 635 states have internal predecessors, (879), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:19:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 891 transitions. [2023-11-22 23:19:05,114 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 891 transitions. Word has length 104 [2023-11-22 23:19:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:05,115 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 891 transitions. [2023-11-22 23:19:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 891 transitions. [2023-11-22 23:19:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-22 23:19:05,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:05,116 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:05,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 23:19:05,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:05,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash 673866092, now seen corresponding path program 1 times [2023-11-22 23:19:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:05,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051202629] [2023-11-22 23:19:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:05,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275380649] [2023-11-22 23:19:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:05,361 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) [2023-11-22 23:19:05,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 23:19:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:05,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 23:19:05,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:05,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:05,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051202629] [2023-11-22 23:19:05,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:05,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275380649] [2023-11-22 23:19:05,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275380649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:05,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:19:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207802587] [2023-11-22 23:19:05,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:19:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:19:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:19:05,801 INFO L87 Difference]: Start difference. First operand 642 states and 891 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:06,228 INFO L93 Difference]: Finished difference Result 1166 states and 1627 transitions. [2023-11-22 23:19:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:19:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2023-11-22 23:19:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:06,231 INFO L225 Difference]: With dead ends: 1166 [2023-11-22 23:19:06,231 INFO L226 Difference]: Without dead ends: 658 [2023-11-22 23:19:06,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:19:06,233 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 15 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:06,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2032 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:19:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-11-22 23:19:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 644. [2023-11-22 23:19:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 635 states have (on average 1.3905511811023623) internal successors, (883), 637 states have internal predecessors, (883), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:19:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 895 transitions. [2023-11-22 23:19:06,247 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 895 transitions. Word has length 105 [2023-11-22 23:19:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:06,247 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 895 transitions. [2023-11-22 23:19:06,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 895 transitions. [2023-11-22 23:19:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-22 23:19:06,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:06,249 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:06,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:06,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 23:19:06,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:06,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 194559331, now seen corresponding path program 1 times [2023-11-22 23:19:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095414063] [2023-11-22 23:19:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:06,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109625609] [2023-11-22 23:19:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:06,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:06,519 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) [2023-11-22 23:19:06,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 23:19:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:06,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 23:19:06,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:06,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095414063] [2023-11-22 23:19:06,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109625609] [2023-11-22 23:19:06,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109625609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:06,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:06,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:19:06,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000071982] [2023-11-22 23:19:06,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:06,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:19:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:19:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:19:06,951 INFO L87 Difference]: Start difference. First operand 644 states and 895 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:07,392 INFO L93 Difference]: Finished difference Result 1177 states and 1638 transitions. [2023-11-22 23:19:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:19:07,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2023-11-22 23:19:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:07,394 INFO L225 Difference]: With dead ends: 1177 [2023-11-22 23:19:07,394 INFO L226 Difference]: Without dead ends: 672 [2023-11-22 23:19:07,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:19:07,395 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 43 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2133 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:19:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-22 23:19:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 654. [2023-11-22 23:19:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 645 states have (on average 1.3875968992248062) internal successors, (895), 647 states have internal predecessors, (895), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:19:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 907 transitions. [2023-11-22 23:19:07,407 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 907 transitions. Word has length 105 [2023-11-22 23:19:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:07,408 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 907 transitions. [2023-11-22 23:19:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 907 transitions. [2023-11-22 23:19:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-22 23:19:07,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:07,409 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:07,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:07,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 23:19:07,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:07,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash -512388264, now seen corresponding path program 1 times [2023-11-22 23:19:07,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:07,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325564727] [2023-11-22 23:19:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:07,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:07,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143718496] [2023-11-22 23:19:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:07,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:07,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:07,660 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) [2023-11-22 23:19:07,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 23:19:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:08,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 23:19:08,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:08,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:08,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:08,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325564727] [2023-11-22 23:19:08,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:08,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143718496] [2023-11-22 23:19:08,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143718496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:08,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:08,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:19:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220479868] [2023-11-22 23:19:08,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:08,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:19:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:19:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:19:08,136 INFO L87 Difference]: Start difference. First operand 654 states and 907 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:08,542 INFO L93 Difference]: Finished difference Result 1195 states and 1665 transitions. [2023-11-22 23:19:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:19:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-11-22 23:19:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:08,545 INFO L225 Difference]: With dead ends: 1195 [2023-11-22 23:19:08,545 INFO L226 Difference]: Without dead ends: 676 [2023-11-22 23:19:08,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:19:08,546 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 20 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:08,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2185 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:19:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-22 23:19:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 666. [2023-11-22 23:19:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 657 states have (on average 1.3835616438356164) internal successors, (909), 659 states have internal predecessors, (909), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:19:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 921 transitions. [2023-11-22 23:19:08,558 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 921 transitions. Word has length 106 [2023-11-22 23:19:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:08,558 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 921 transitions. [2023-11-22 23:19:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 921 transitions. [2023-11-22 23:19:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-22 23:19:08,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:08,559 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:08,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-22 23:19:08,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 23:19:08,772 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:08,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash -389895050, now seen corresponding path program 1 times [2023-11-22 23:19:08,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:08,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312467605] [2023-11-22 23:19:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:08,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:08,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185312441] [2023-11-22 23:19:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:08,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:08,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:08,803 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) [2023-11-22 23:19:08,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 23:19:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:09,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:19:09,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:09,477 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 [2023-11-22 23:19:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:09,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:09,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:09,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312467605] [2023-11-22 23:19:09,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:09,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185312441] [2023-11-22 23:19:09,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185312441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:09,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:19:09,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79573625] [2023-11-22 23:19:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:09,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:19:09,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:19:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:19:09,495 INFO L87 Difference]: Start difference. First operand 666 states and 921 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:09,702 INFO L93 Difference]: Finished difference Result 811 states and 1122 transitions. [2023-11-22 23:19:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:19:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-11-22 23:19:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:09,706 INFO L225 Difference]: With dead ends: 811 [2023-11-22 23:19:09,707 INFO L226 Difference]: Without dead ends: 801 [2023-11-22 23:19:09,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:19:09,707 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 502 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:09,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1250 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:19:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-22 23:19:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 668. [2023-11-22 23:19:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 659 states have (on average 1.3823975720789075) internal successors, (911), 661 states have internal predecessors, (911), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 23:19:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 923 transitions. [2023-11-22 23:19:09,726 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 923 transitions. Word has length 106 [2023-11-22 23:19:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:09,726 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 923 transitions. [2023-11-22 23:19:09,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 923 transitions. [2023-11-22 23:19:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-22 23:19:09,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:09,728 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:09,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:09,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 23:19:09,936 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:09,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 118885736, now seen corresponding path program 1 times [2023-11-22 23:19:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:09,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157304354] [2023-11-22 23:19:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:09,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:09,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451749337] [2023-11-22 23:19:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:09,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:09,967 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) [2023-11-22 23:19:09,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 23:19:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:10,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 23:19:10,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:10,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157304354] [2023-11-22 23:19:10,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451749337] [2023-11-22 23:19:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451749337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:10,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:19:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858599077] [2023-11-22 23:19:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:19:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:19:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:19:10,534 INFO L87 Difference]: Start difference. First operand 668 states and 923 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:10,754 INFO L93 Difference]: Finished difference Result 1296 states and 1793 transitions. [2023-11-22 23:19:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:19:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2023-11-22 23:19:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:10,758 INFO L225 Difference]: With dead ends: 1296 [2023-11-22 23:19:10,758 INFO L226 Difference]: Without dead ends: 805 [2023-11-22 23:19:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:19:10,759 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 876 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:10,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 933 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:19:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-22 23:19:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 797. [2023-11-22 23:19:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 787 states have (on average 1.3837357052096568) internal successors, (1089), 790 states have internal predecessors, (1089), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1103 transitions. [2023-11-22 23:19:10,782 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1103 transitions. Word has length 160 [2023-11-22 23:19:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:10,783 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1103 transitions. [2023-11-22 23:19:10,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1103 transitions. [2023-11-22 23:19:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-22 23:19:10,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:10,785 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:10,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:10,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 23:19:10,998 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:10,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1659427285, now seen corresponding path program 1 times [2023-11-22 23:19:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412552897] [2023-11-22 23:19:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:11,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:11,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124725375] [2023-11-22 23:19:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:11,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:11,037 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) [2023-11-22 23:19:11,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 23:19:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:11,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-22 23:19:11,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:11,482 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 [2023-11-22 23:19:11,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 23:19:11,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-22 23:19:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:11,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:11,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412552897] [2023-11-22 23:19:11,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124725375] [2023-11-22 23:19:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124725375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:11,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:11,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 23:19:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010160359] [2023-11-22 23:19:11,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:19:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:19:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:19:11,875 INFO L87 Difference]: Start difference. First operand 797 states and 1103 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:12,722 INFO L93 Difference]: Finished difference Result 1310 states and 1812 transitions. [2023-11-22 23:19:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:19:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2023-11-22 23:19:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:12,726 INFO L225 Difference]: With dead ends: 1310 [2023-11-22 23:19:12,726 INFO L226 Difference]: Without dead ends: 931 [2023-11-22 23:19:12,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-22 23:19:12,727 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 371 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:12,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 2661 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:19:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-11-22 23:19:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 832. [2023-11-22 23:19:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 822 states have (on average 1.3722627737226278) internal successors, (1128), 825 states have internal predecessors, (1128), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1142 transitions. [2023-11-22 23:19:12,744 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1142 transitions. Word has length 170 [2023-11-22 23:19:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1142 transitions. [2023-11-22 23:19:12,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1142 transitions. [2023-11-22 23:19:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-22 23:19:12,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:12,746 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:12,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:12,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:12,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1544583376, now seen corresponding path program 1 times [2023-11-22 23:19:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:12,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092488352] [2023-11-22 23:19:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:12,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496178747] [2023-11-22 23:19:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:12,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:12,993 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) [2023-11-22 23:19:13,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 23:19:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:13,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 23:19:13,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:13,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:13,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092488352] [2023-11-22 23:19:13,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496178747] [2023-11-22 23:19:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496178747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:13,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:19:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590868363] [2023-11-22 23:19:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:13,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:19:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:19:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:19:13,497 INFO L87 Difference]: Start difference. First operand 832 states and 1142 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:13,744 INFO L93 Difference]: Finished difference Result 1215 states and 1675 transitions. [2023-11-22 23:19:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:19:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2023-11-22 23:19:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:13,746 INFO L225 Difference]: With dead ends: 1215 [2023-11-22 23:19:13,746 INFO L226 Difference]: Without dead ends: 836 [2023-11-22 23:19:13,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:19:13,747 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 30 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:13,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1862 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:19:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-22 23:19:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 832. [2023-11-22 23:19:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 822 states have (on average 1.3686131386861313) internal successors, (1125), 825 states have internal predecessors, (1125), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1139 transitions. [2023-11-22 23:19:13,763 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1139 transitions. Word has length 171 [2023-11-22 23:19:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:13,764 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1139 transitions. [2023-11-22 23:19:13,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1139 transitions. [2023-11-22 23:19:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-22 23:19:13,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:13,765 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:13,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:13,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:13,981 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:13,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1395211568, now seen corresponding path program 1 times [2023-11-22 23:19:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662630696] [2023-11-22 23:19:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:14,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:14,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387815317] [2023-11-22 23:19:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:14,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:14,045 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) [2023-11-22 23:19:14,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 23:19:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:14,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 23:19:14,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:14,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662630696] [2023-11-22 23:19:14,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387815317] [2023-11-22 23:19:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387815317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:14,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:19:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788265667] [2023-11-22 23:19:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:19:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:19:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:19:14,603 INFO L87 Difference]: Start difference. First operand 832 states and 1139 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:14,750 INFO L93 Difference]: Finished difference Result 1226 states and 1687 transitions. [2023-11-22 23:19:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:19:14,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2023-11-22 23:19:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:14,753 INFO L225 Difference]: With dead ends: 1226 [2023-11-22 23:19:14,753 INFO L226 Difference]: Without dead ends: 847 [2023-11-22 23:19:14,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:19:14,754 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 10 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:14,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1586 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:19:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-22 23:19:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2023-11-22 23:19:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 834 states have (on average 1.3669064748201438) internal successors, (1140), 837 states have internal predecessors, (1140), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1154 transitions. [2023-11-22 23:19:14,770 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1154 transitions. Word has length 172 [2023-11-22 23:19:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:14,770 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1154 transitions. [2023-11-22 23:19:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1154 transitions. [2023-11-22 23:19:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-22 23:19:14,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:14,772 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:14,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:14,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:14,986 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:14,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1147065074, now seen corresponding path program 1 times [2023-11-22 23:19:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499427912] [2023-11-22 23:19:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:15,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:15,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411807576] [2023-11-22 23:19:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:15,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:15,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:15,041 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) [2023-11-22 23:19:15,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 23:19:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:15,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 23:19:15,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:15,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:15,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499427912] [2023-11-22 23:19:15,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411807576] [2023-11-22 23:19:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411807576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:15,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:15,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:19:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982558762] [2023-11-22 23:19:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:15,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:19:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:19:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:19:15,825 INFO L87 Difference]: Start difference. First operand 844 states and 1154 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:16,095 INFO L93 Difference]: Finished difference Result 1250 states and 1717 transitions. [2023-11-22 23:19:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:19:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2023-11-22 23:19:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:16,097 INFO L225 Difference]: With dead ends: 1250 [2023-11-22 23:19:16,098 INFO L226 Difference]: Without dead ends: 859 [2023-11-22 23:19:16,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:19:16,099 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 16 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:16,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2281 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:19:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-11-22 23:19:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 856. [2023-11-22 23:19:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 846 states have (on average 1.3652482269503545) internal successors, (1155), 849 states have internal predecessors, (1155), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1169 transitions. [2023-11-22 23:19:16,118 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1169 transitions. Word has length 172 [2023-11-22 23:19:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:16,118 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1169 transitions. [2023-11-22 23:19:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1169 transitions. [2023-11-22 23:19:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-22 23:19:16,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:16,121 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:16,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:16,336 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:16,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 983710506, now seen corresponding path program 1 times [2023-11-22 23:19:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766553259] [2023-11-22 23:19:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:16,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:16,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022458380] [2023-11-22 23:19:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:16,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:16,399 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) [2023-11-22 23:19:16,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 23:19:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:16,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 23:19:16,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:17,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766553259] [2023-11-22 23:19:17,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022458380] [2023-11-22 23:19:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022458380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:19:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316568074] [2023-11-22 23:19:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:19:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:19:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:19:17,012 INFO L87 Difference]: Start difference. First operand 856 states and 1169 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:17,327 INFO L93 Difference]: Finished difference Result 1274 states and 1747 transitions. [2023-11-22 23:19:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:19:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2023-11-22 23:19:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:17,330 INFO L225 Difference]: With dead ends: 1274 [2023-11-22 23:19:17,330 INFO L226 Difference]: Without dead ends: 871 [2023-11-22 23:19:17,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:19:17,334 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 15 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:17,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2286 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:19:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-11-22 23:19:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 856. [2023-11-22 23:19:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 846 states have (on average 1.3652482269503545) internal successors, (1155), 849 states have internal predecessors, (1155), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1169 transitions. [2023-11-22 23:19:17,350 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1169 transitions. Word has length 173 [2023-11-22 23:19:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:17,351 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1169 transitions. [2023-11-22 23:19:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1169 transitions. [2023-11-22 23:19:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-22 23:19:17,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:17,353 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:17,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:17,567 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:17,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -812376607, now seen corresponding path program 1 times [2023-11-22 23:19:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54351655] [2023-11-22 23:19:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:17,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575986778] [2023-11-22 23:19:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:17,603 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) [2023-11-22 23:19:17,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 23:19:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:18,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 23:19:18,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:18,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54351655] [2023-11-22 23:19:18,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575986778] [2023-11-22 23:19:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575986778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:19:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825881501] [2023-11-22 23:19:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:19:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:19:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:19:18,591 INFO L87 Difference]: Start difference. First operand 856 states and 1169 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:18,974 INFO L93 Difference]: Finished difference Result 1289 states and 1765 transitions. [2023-11-22 23:19:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:19:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2023-11-22 23:19:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:18,977 INFO L225 Difference]: With dead ends: 1289 [2023-11-22 23:19:18,977 INFO L226 Difference]: Without dead ends: 886 [2023-11-22 23:19:18,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:19:18,978 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 19 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3022 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:19:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-22 23:19:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 877. [2023-11-22 23:19:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 867 states have (on average 1.3633217993079585) internal successors, (1182), 870 states have internal predecessors, (1182), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1196 transitions. [2023-11-22 23:19:18,994 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1196 transitions. Word has length 173 [2023-11-22 23:19:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:18,994 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1196 transitions. [2023-11-22 23:19:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1196 transitions. [2023-11-22 23:19:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-22 23:19:18,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:18,996 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:19,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:19,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:19,212 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:19,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash 817156933, now seen corresponding path program 1 times [2023-11-22 23:19:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74589431] [2023-11-22 23:19:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:19,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650061186] [2023-11-22 23:19:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:19,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:19,247 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) [2023-11-22 23:19:19,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 23:19:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:19,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 23:19:19,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:19,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:19,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74589431] [2023-11-22 23:19:19,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650061186] [2023-11-22 23:19:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650061186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:19,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:19,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:19:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257750911] [2023-11-22 23:19:19,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:19:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:19:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:19:19,852 INFO L87 Difference]: Start difference. First operand 877 states and 1196 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:20,126 INFO L93 Difference]: Finished difference Result 1328 states and 1816 transitions. [2023-11-22 23:19:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:19:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-11-22 23:19:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:20,129 INFO L225 Difference]: With dead ends: 1328 [2023-11-22 23:19:20,130 INFO L226 Difference]: Without dead ends: 904 [2023-11-22 23:19:20,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:19:20,131 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 20 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:20,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2745 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:19:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-22 23:19:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 874. [2023-11-22 23:19:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 864 states have (on average 1.3611111111111112) internal successors, (1176), 867 states have internal predecessors, (1176), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1190 transitions. [2023-11-22 23:19:20,148 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1190 transitions. Word has length 174 [2023-11-22 23:19:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:20,149 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1190 transitions. [2023-11-22 23:19:20,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1190 transitions. [2023-11-22 23:19:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-22 23:19:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:20,150 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:20,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:20,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-22 23:19:20,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:20,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1150806557, now seen corresponding path program 1 times [2023-11-22 23:19:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597144771] [2023-11-22 23:19:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:20,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001225124] [2023-11-22 23:19:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:20,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:20,422 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) [2023-11-22 23:19:20,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 23:19:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:21,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-22 23:19:21,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:19:31,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597144771] [2023-11-22 23:19:31,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001225124] [2023-11-22 23:19:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001225124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 23:19:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528031370] [2023-11-22 23:19:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:19:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:19:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:19:31,527 INFO L87 Difference]: Start difference. First operand 874 states and 1190 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:33,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 23:19:35,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 23:19:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:36,509 INFO L93 Difference]: Finished difference Result 1310 states and 1783 transitions. [2023-11-22 23:19:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:19:36,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-11-22 23:19:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:36,512 INFO L225 Difference]: With dead ends: 1310 [2023-11-22 23:19:36,512 INFO L226 Difference]: Without dead ends: 889 [2023-11-22 23:19:36,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:19:36,513 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 15 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3774 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:36,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3774 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-22 23:19:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-22 23:19:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 883. [2023-11-22 23:19:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 873 states have (on average 1.3573883161512028) internal successors, (1185), 876 states have internal predecessors, (1185), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1199 transitions. [2023-11-22 23:19:36,536 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1199 transitions. Word has length 174 [2023-11-22 23:19:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:36,537 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1199 transitions. [2023-11-22 23:19:36,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1199 transitions. [2023-11-22 23:19:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-22 23:19:36,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:36,539 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:36,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:36,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 23:19:36,750 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:36,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash -482242617, now seen corresponding path program 1 times [2023-11-22 23:19:36,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:36,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129110486] [2023-11-22 23:19:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:36,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:36,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888869441] [2023-11-22 23:19:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:36,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:36,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:36,797 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) [2023-11-22 23:19:36,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 23:19:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:38,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-22 23:19:38,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:19:38,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129110486] [2023-11-22 23:19:38,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:38,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888869441] [2023-11-22 23:19:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888869441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:38,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 23:19:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149933707] [2023-11-22 23:19:38,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:38,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:19:38,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:19:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:19:38,344 INFO L87 Difference]: Start difference. First operand 883 states and 1199 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:39,347 INFO L93 Difference]: Finished difference Result 1642 states and 2237 transitions. [2023-11-22 23:19:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:19:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-11-22 23:19:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:39,350 INFO L225 Difference]: With dead ends: 1642 [2023-11-22 23:19:39,350 INFO L226 Difference]: Without dead ends: 905 [2023-11-22 23:19:39,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:19:39,351 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 26 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:39,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2966 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:19:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-22 23:19:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 895. [2023-11-22 23:19:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 885 states have (on average 1.3570621468926554) internal successors, (1201), 888 states have internal predecessors, (1201), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-22 23:19:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1215 transitions. [2023-11-22 23:19:39,367 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1215 transitions. Word has length 174 [2023-11-22 23:19:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:39,367 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1215 transitions. [2023-11-22 23:19:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1215 transitions. [2023-11-22 23:19:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-22 23:19:39,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:39,368 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:39,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-22 23:19:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 23:19:39,579 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:39,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1414169259, now seen corresponding path program 1 times [2023-11-22 23:19:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:39,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307734155] [2023-11-22 23:19:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:39,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092001873] [2023-11-22 23:19:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:39,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:39,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:39,629 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) [2023-11-22 23:19:39,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 23:19:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:40,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 23:19:40,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 23:19:40,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:19:40,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:19:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307734155] [2023-11-22 23:19:40,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 23:19:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092001873] [2023-11-22 23:19:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092001873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:19:40,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:19:40,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:19:40,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219165601] [2023-11-22 23:19:40,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:19:40,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:19:40,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:19:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:19:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:19:40,260 INFO L87 Difference]: Start difference. First operand 895 states and 1215 transitions. Second operand has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:19:40,295 INFO L93 Difference]: Finished difference Result 1606 states and 2178 transitions. [2023-11-22 23:19:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:19:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-11-22 23:19:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:19:40,298 INFO L225 Difference]: With dead ends: 1606 [2023-11-22 23:19:40,298 INFO L226 Difference]: Without dead ends: 897 [2023-11-22 23:19:40,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:19:40,299 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:19:40,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1322 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:19:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-11-22 23:19:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2023-11-22 23:19:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 886 states have (on average 1.357787810383747) internal successors, (1203), 890 states have internal predecessors, (1203), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-22 23:19:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1218 transitions. [2023-11-22 23:19:40,316 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1218 transitions. Word has length 174 [2023-11-22 23:19:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:19:40,316 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1218 transitions. [2023-11-22 23:19:40,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:19:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1218 transitions. [2023-11-22 23:19:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:19:40,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:19:40,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:19:40,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 23:19:40,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:40,527 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:19:40,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:19:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1413322233, now seen corresponding path program 1 times [2023-11-22 23:19:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:19:40,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893377001] [2023-11-22 23:19:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:40,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:19:40,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 23:19:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603909105] [2023-11-22 23:19:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:19:40,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:19:40,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:19:40,562 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:19:40,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 23:19:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:19:41,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 140 conjunts are in the unsatisfiable core [2023-11-22 23:19:41,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:19:41,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 23:19:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:19:41,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-11-22 23:19:42,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 23:19:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:19:42,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:19:42,153 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-22 23:19:42,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 30 treesize of output 37 [2023-11-22 23:19:42,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 23:19:42,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-22 23:19:42,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 23:19:42,384 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-22 23:19:42,384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2023-11-22 23:19:42,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-22 23:20:31,444 INFO L224 Elim1Store]: Index analysis took 1419 ms