./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:16,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:16,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:14:16,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:16,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:16,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:16,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:16,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:16,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:16,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:16,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:16,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:16,874 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:16,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:16,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:16,876 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:16,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:16,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:16,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:16,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:16,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:16,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:16,879 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:16,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:16,880 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:16,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:16,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:16,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:16,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:16,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:16,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:16,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:16,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:16,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:16,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:16,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:16,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:16,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:16,886 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:16,886 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2023-11-06 21:14:17,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:17,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:17,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:17,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:17,244 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:17,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/array-tiling/tcpy.c [2023-11-06 21:14:20,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:20,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:20,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/sv-benchmarks/c/array-tiling/tcpy.c [2023-11-06 21:14:20,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/data/40b034e63/e4f371af82ae4028862e724453559396/FLAGb16f14353 [2023-11-06 21:14:20,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/data/40b034e63/e4f371af82ae4028862e724453559396 [2023-11-06 21:14:20,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:20,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:20,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:20,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:20,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:20,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e5d461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20, skipping insertion in model container [2023-11-06 21:14:20,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:20,738 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2023-11-06 21:14:20,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:20,772 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:20,790 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2023-11-06 21:14:20,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:20,823 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:20,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20 WrapperNode [2023-11-06 21:14:20,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:20,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:20,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:20,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:20,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,873 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2023-11-06 21:14:20,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:20,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:20,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:20,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:20,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:20,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:20,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:20,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:20,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (1/1) ... [2023-11-06 21:14:20,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:20,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:20,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:20,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:14:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:21,093 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:21,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:21,466 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:21,472 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:21,472 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 21:14:21,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:21 BoogieIcfgContainer [2023-11-06 21:14:21,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:21,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:21,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:21,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:21,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:20" (1/3) ... [2023-11-06 21:14:21,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f273b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:21, skipping insertion in model container [2023-11-06 21:14:21,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:20" (2/3) ... [2023-11-06 21:14:21,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f273b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:21, skipping insertion in model container [2023-11-06 21:14:21,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:21" (3/3) ... [2023-11-06 21:14:21,485 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2023-11-06 21:14:21,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:21,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:21,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:21,554 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=LoopsAndPotentialCycles, 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;@509575e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:21,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:14:21,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:21,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:21,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:21,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1608152958, now seen corresponding path program 1 times [2023-11-06 21:14:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795242502] [2023-11-06 21:14:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795242502] [2023-11-06 21:14:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795242502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957323520] [2023-11-06 21:14:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:21,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:14:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:14:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:14:21,795 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:21,813 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2023-11-06 21:14:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:14:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 21:14:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:21,821 INFO L225 Difference]: With dead ends: 39 [2023-11-06 21:14:21,821 INFO L226 Difference]: Without dead ends: 17 [2023-11-06 21:14:21,824 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 [2023-11-06 21:14:21,827 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:21,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-06 21:14:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-06 21:14:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-06 21:14:21,857 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-11-06 21:14:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:21,857 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-06 21:14:21,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-06 21:14:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:14:21,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:21,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:14:21,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:21,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1873320706, now seen corresponding path program 1 times [2023-11-06 21:14:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972456256] [2023-11-06 21:14:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:22,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972456256] [2023-11-06 21:14:22,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972456256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:22,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:22,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:14:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265251934] [2023-11-06 21:14:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:22,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:22,087 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:22,125 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-11-06 21:14:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 21:14:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:22,127 INFO L225 Difference]: With dead ends: 31 [2023-11-06 21:14:22,127 INFO L226 Difference]: Without dead ends: 19 [2023-11-06 21:14:22,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:22,130 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:22,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-06 21:14:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-06 21:14:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-06 21:14:22,137 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2023-11-06 21:14:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:22,137 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-06 21:14:22,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-06 21:14:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:14:22,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:22,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:14:22,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:22,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -270521828, now seen corresponding path program 1 times [2023-11-06 21:14:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008444177] [2023-11-06 21:14:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:22,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:22,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008444177] [2023-11-06 21:14:22,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008444177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:22,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961938474] [2023-11-06 21:14:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:22,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:22,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:22,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:22,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:14:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:22,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:22,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:22,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961938474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:22,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:14:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 21:14:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538843509] [2023-11-06 21:14:22,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:14:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:14:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:22,536 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:22,600 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-06 21:14:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:14:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 21:14:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:22,602 INFO L225 Difference]: With dead ends: 33 [2023-11-06 21:14:22,602 INFO L226 Difference]: Without dead ends: 21 [2023-11-06 21:14:22,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:22,604 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:22,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:14:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-06 21:14:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-06 21:14:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-06 21:14:22,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2023-11-06 21:14:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-06 21:14:22,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-06 21:14:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:14:22,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:22,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:22,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:22,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:22,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1874059334, now seen corresponding path program 2 times [2023-11-06 21:14:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123458869] [2023-11-06 21:14:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:14:23,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123458869] [2023-11-06 21:14:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123458869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:14:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119470746] [2023-11-06 21:14:23,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:23,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:14:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:14:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:23,147 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:23,197 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-11-06 21:14:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:14:23,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 21:14:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:23,199 INFO L225 Difference]: With dead ends: 35 [2023-11-06 21:14:23,201 INFO L226 Difference]: Without dead ends: 28 [2023-11-06 21:14:23,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:23,203 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:23,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-06 21:14:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2023-11-06 21:14:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-06 21:14:23,218 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2023-11-06 21:14:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:23,219 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-06 21:14:23,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-06 21:14:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:14:23,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:23,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:23,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:14:23,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:23,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 265660728, now seen corresponding path program 1 times [2023-11-06 21:14:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:23,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291257696] [2023-11-06 21:14:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:14:23,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291257696] [2023-11-06 21:14:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291257696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:23,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699941878] [2023-11-06 21:14:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:23,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:23,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:23,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:23,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:14:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:24,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 21:14:24,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:24,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:14:24,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:24,375 INFO L351 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 30 treesize of output 15 [2023-11-06 21:14:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:14:24,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:24,532 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:14:24,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 540 treesize of output 504 [2023-11-06 21:14:26,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 119 treesize of output 115 [2023-11-06 21:14:26,198 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:26,199 INFO L351 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 1 case distinctions, treesize of input 71 treesize of output 55 [2023-11-06 21:14:26,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 115 [2023-11-06 21:14:26,254 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:26,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2023-11-06 21:14:26,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:26,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 168 [2023-11-06 21:14:26,317 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:26,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 92 [2023-11-06 21:14:26,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 233 [2023-11-06 21:14:26,417 INFO L322 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2023-11-06 21:14:26,418 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 1 [2023-11-06 21:14:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:26,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 182 treesize of output 176 [2023-11-06 21:14:26,463 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:14:26,464 INFO L351 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 1 [2023-11-06 21:14:26,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 123 treesize of output 119 [2023-11-06 21:14:26,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 73 treesize of output 65 [2023-11-06 21:14:26,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 225 [2023-11-06 21:14:26,536 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:14:26,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 1 [2023-11-06 21:14:26,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-06 21:14:26,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 21:14:26,633 INFO L322 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-06 21:14:26,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 1 [2023-11-06 21:14:26,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:26,672 INFO L322 Elim1Store]: treesize reduction 17, result has 59.5 percent of original size [2023-11-06 21:14:26,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 140 [2023-11-06 21:14:26,830 INFO L322 Elim1Store]: treesize reduction 13, result has 80.9 percent of original size [2023-11-06 21:14:26,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 137 [2023-11-06 21:14:27,036 INFO L322 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2023-11-06 21:14:27,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 93 [2023-11-06 21:14:27,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,129 INFO L322 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2023-11-06 21:14:27,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 1 [2023-11-06 21:14:27,167 INFO L322 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2023-11-06 21:14:27,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 56 [2023-11-06 21:14:27,191 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,258 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,267 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,336 INFO L322 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2023-11-06 21:14:27,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 134 [2023-11-06 21:14:27,426 INFO L322 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2023-11-06 21:14:27,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233 treesize of output 1 [2023-11-06 21:14:27,452 INFO L322 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2023-11-06 21:14:27,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 241 treesize of output 1 [2023-11-06 21:14:27,488 INFO L322 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2023-11-06 21:14:27,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 97 [2023-11-06 21:14:27,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,574 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:14:27,575 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-11-06 21:14:27,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,653 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:14:27,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,715 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,715 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,719 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:14:27,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:14:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,765 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:14:27,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 1 [2023-11-06 21:14:27,772 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,773 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2023-11-06 21:14:27,785 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,786 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,791 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 21:14:27,813 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,819 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:14:27,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 174 treesize of output 1 [2023-11-06 21:14:27,834 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,844 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 21:14:27,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 182 treesize of output 1 [2023-11-06 21:14:27,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:27,888 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:14:27,898 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 21:14:27,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 182 treesize of output 1 [2023-11-06 21:14:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:14:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699941878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:28,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:14:28,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2023-11-06 21:14:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685253404] [2023-11-06 21:14:28,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:28,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:14:28,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:14:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:14:28,135 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:28,405 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-06 21:14:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:14:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 21:14:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:28,408 INFO L225 Difference]: With dead ends: 28 [2023-11-06 21:14:28,408 INFO L226 Difference]: Without dead ends: 26 [2023-11-06 21:14:28,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:14:28,410 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:28,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 31 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:14:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-06 21:14:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-06 21:14:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-06 21:14:28,428 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2023-11-06 21:14:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:28,428 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-06 21:14:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-06 21:14:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 21:14:28,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:28,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:28,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:28,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:28,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:28,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1994055598, now seen corresponding path program 1 times [2023-11-06 21:14:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913055961] [2023-11-06 21:14:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:29,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913055961] [2023-11-06 21:14:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913055961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388938423] [2023-11-06 21:14:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:29,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:29,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:29,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:29,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:14:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:30,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:14:30,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:30,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:14:30,120 INFO L351 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 [2023-11-06 21:14:30,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-11-06 21:14:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:30,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:38,525 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:38,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1178 treesize of output 955 [2023-11-06 21:15:38,579 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:38,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 775 treesize of output 721 [2023-11-06 21:15:38,678 INFO L322 Elim1Store]: treesize reduction 41, result has 49.4 percent of original size [2023-11-06 21:15:38,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 949 treesize of output 851 [2023-11-06 21:15:40,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-06 21:15:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388938423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:52,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:52,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 35 [2023-11-06 21:15:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502316531] [2023-11-06 21:15:52,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:52,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 21:15:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:52,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 21:15:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=950, Unknown=29, NotChecked=0, Total=1190 [2023-11-06 21:15:52,337 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:54,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:15:56,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:15:58,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:00,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:02,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:04,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:06,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:08,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:10,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:12,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:14,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:16,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:18,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:20,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:22,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:24,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:26,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:28,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:30,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:32,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:34,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:16:36,813 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (* 4 c_~SIZE~0))) (and (forall ((|ULTIMATE.start_main_~acopy~0#1.offset| Int) (v_ArrVal_83 Int)) (let ((.cse0 (store .cse2 (+ (- 4) .cse3 |ULTIMATE.start_main_~acopy~0#1.offset|) (select .cse4 (+ (- 4) .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (= (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| (store .cse0 |ULTIMATE.start_main_~acopy~0#1.offset| v_ArrVal_83)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((|ULTIMATE.start_main_~acopy~0#1.offset| Int) (v_ArrVal_83 Int)) (let ((.cse5 (store (let ((.cse6 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|))) (store .cse2 (+ .cse6 (- 4) .cse3 |ULTIMATE.start_main_~acopy~0#1.offset|) (select .cse4 (+ .cse6 (- 4) .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_83))) (= (select .cse5 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2023-11-06 21:16:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:40,052 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-06 21:16:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 21:16:40,052 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-06 21:16:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:40,054 INFO L225 Difference]: With dead ends: 80 [2023-11-06 21:16:40,054 INFO L226 Difference]: Without dead ends: 69 [2023-11-06 21:16:40,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 85.7s TimeCoverageRelationStatistics Valid=572, Invalid=2481, Unknown=31, NotChecked=108, Total=3192 [2023-11-06 21:16:40,056 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 149 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 32 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 119 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 305 Invalid, 20 Unknown, 33 Unchecked, 42.5s Time] [2023-11-06 21:16:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-06 21:16:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 44. [2023-11-06 21:16:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-06 21:16:40,074 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 22 [2023-11-06 21:16:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:40,075 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-06 21:16:40,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-06 21:16:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 21:16:40,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:40,077 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:40,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:40,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:16:40,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:40,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash -757863644, now seen corresponding path program 2 times [2023-11-06 21:16:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:40,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022168599] [2023-11-06 21:16:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:16:40,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022168599] [2023-11-06 21:16:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022168599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035806719] [2023-11-06 21:16:40,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:16:40,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:40,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:40,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:16:40,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:16:40,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:40,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:16:40,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:16:40,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:16:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035806719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:40,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:40,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-06 21:16:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258648281] [2023-11-06 21:16:40,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:40,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:16:40,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:16:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:16:40,791 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:41,012 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2023-11-06 21:16:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:16:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-06 21:16:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:41,014 INFO L225 Difference]: With dead ends: 83 [2023-11-06 21:16:41,014 INFO L226 Difference]: Without dead ends: 61 [2023-11-06 21:16:41,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:16:41,016 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:41,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 50 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:16:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-06 21:16:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2023-11-06 21:16:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-11-06 21:16:41,034 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2023-11-06 21:16:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:41,034 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-11-06 21:16:41,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-11-06 21:16:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 21:16:41,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:41,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:41,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:16:41,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:41,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -980493622, now seen corresponding path program 3 times [2023-11-06 21:16:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:41,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028243238] [2023-11-06 21:16:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:16:41,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028243238] [2023-11-06 21:16:41,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028243238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730640210] [2023-11-06 21:16:41,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:16:41,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:41,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:41,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:41,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:16:41,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 21:16:41,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:41,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 21:16:41,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:41,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:16:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:42,114 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 21:16:42,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:42,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:42,128 INFO L351 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 30 treesize of output 15 [2023-11-06 21:16:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 21:16:42,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:42,670 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:42,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 576 treesize of output 540 [2023-11-06 21:16:45,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,189 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:16:45,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 488 treesize of output 320 [2023-11-06 21:16:45,279 INFO L322 Elim1Store]: treesize reduction 70, result has 11.4 percent of original size [2023-11-06 21:16:45,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 652 treesize of output 433 [2023-11-06 21:16:45,317 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,358 INFO L322 Elim1Store]: treesize reduction 35, result has 39.7 percent of original size [2023-11-06 21:16:45,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 192 treesize of output 142 [2023-11-06 21:16:45,492 INFO L322 Elim1Store]: treesize reduction 10, result has 72.2 percent of original size [2023-11-06 21:16:45,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 108 [2023-11-06 21:16:45,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,594 INFO L322 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2023-11-06 21:16:45,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 53 [2023-11-06 21:16:45,610 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,611 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,614 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:16:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,633 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,663 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:16:45,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 1 [2023-11-06 21:16:45,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,719 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,726 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:16:45,726 INFO L351 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 1 [2023-11-06 21:16:45,744 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,756 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 21:16:45,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 1 [2023-11-06 21:16:45,781 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:16:45,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 188 treesize of output 1 [2023-11-06 21:16:45,812 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,813 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,841 INFO L322 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2023-11-06 21:16:45,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 492 treesize of output 328 [2023-11-06 21:16:45,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,935 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:16:45,935 INFO L351 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 1 [2023-11-06 21:16:45,949 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,957 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 21:16:45,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 1 [2023-11-06 21:16:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,978 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:45,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,002 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:16:46,003 INFO L351 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 1 [2023-11-06 21:16:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,016 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,032 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,044 INFO L322 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-06 21:16:46,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 279 treesize of output 1 [2023-11-06 21:16:46,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 21:16:46,086 INFO L322 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2023-11-06 21:16:46,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 1 [2023-11-06 21:16:46,125 INFO L322 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2023-11-06 21:16:46,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 1 [2023-11-06 21:16:46,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,144 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,220 INFO L322 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-06 21:16:46,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 659 treesize of output 1 [2023-11-06 21:16:46,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,237 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,242 INFO L351 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 34 treesize of output 1 [2023-11-06 21:16:46,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:16:46,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,265 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,269 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:16:46,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 21:16:46,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,312 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,348 INFO L322 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2023-11-06 21:16:46,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 1 [2023-11-06 21:16:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,400 INFO L322 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-06 21:16:46,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 1 [2023-11-06 21:16:46,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,413 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,430 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,437 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 21:16:46,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 1 [2023-11-06 21:16:46,443 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,481 INFO L322 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2023-11-06 21:16:46,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 504 treesize of output 1 [2023-11-06 21:16:46,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,557 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,608 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,632 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,675 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,735 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 21:16:46,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:46,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 21:16:47,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730640210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:47,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:47,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2023-11-06 21:16:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022104127] [2023-11-06 21:16:47,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:47,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 21:16:47,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 21:16:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-11-06 21:16:47,217 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:49,800 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2023-11-06 21:16:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-06 21:16:49,800 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-06 21:16:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:49,801 INFO L225 Difference]: With dead ends: 101 [2023-11-06 21:16:49,801 INFO L226 Difference]: Without dead ends: 73 [2023-11-06 21:16:49,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=829, Invalid=3593, Unknown=0, NotChecked=0, Total=4422 [2023-11-06 21:16:49,805 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 177 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:49,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 140 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:16:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-06 21:16:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 34. [2023-11-06 21:16:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-11-06 21:16:49,834 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 26 [2023-11-06 21:16:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:49,834 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-11-06 21:16:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-11-06 21:16:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 21:16:49,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:49,837 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:49,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 21:16:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:50,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:50,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1750966422, now seen corresponding path program 4 times [2023-11-06 21:16:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205368576] [2023-11-06 21:16:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:16:50,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205368576] [2023-11-06 21:16:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205368576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527326358] [2023-11-06 21:16:50,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:16:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:50,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:50,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:16:50,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:16:50,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:50,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 21:16:50,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:16:50,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:16:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527326358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:51,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 23 [2023-11-06 21:16:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172107566] [2023-11-06 21:16:51,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 21:16:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 21:16:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-06 21:16:51,166 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:51,777 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2023-11-06 21:16:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:16:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-06 21:16:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:51,778 INFO L225 Difference]: With dead ends: 54 [2023-11-06 21:16:51,778 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 21:16:51,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=927, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 21:16:51,780 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 113 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:51,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 101 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:16:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 21:16:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2023-11-06 21:16:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-11-06 21:16:51,791 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2023-11-06 21:16:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:51,791 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-11-06 21:16:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-11-06 21:16:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:16:51,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:51,793 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:51,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:51,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:52,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:52,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 659943902, now seen corresponding path program 5 times [2023-11-06 21:16:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110681366] [2023-11-06 21:16:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110681366] [2023-11-06 21:16:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110681366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061928826] [2023-11-06 21:16:54,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:16:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:54,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:55,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:16:55,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-06 21:16:55,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:55,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 21:16:55,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:55,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:16:55,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:55,959 INFO L351 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 40 treesize of output 29 [2023-11-06 21:16:56,922 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:56,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 20 [2023-11-06 21:16:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:56,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:57,528 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:57,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 258 [2023-11-06 21:16:57,819 INFO L322 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-11-06 21:16:57,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 91 [2023-11-06 21:16:57,931 INFO L322 Elim1Store]: treesize reduction 5, result has 86.1 percent of original size [2023-11-06 21:16:57,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 117 [2023-11-06 21:16:58,116 INFO L322 Elim1Store]: treesize reduction 20, result has 44.4 percent of original size [2023-11-06 21:16:58,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 139 [2023-11-06 21:16:58,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,239 INFO L322 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-06 21:16:58,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 32 [2023-11-06 21:16:58,317 INFO L322 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-06 21:16:58,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 95 [2023-11-06 21:16:58,358 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,359 INFO L351 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 52 treesize of output 38 [2023-11-06 21:16:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,478 INFO L322 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-11-06 21:16:58,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 60 [2023-11-06 21:16:58,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,546 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:16:58,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2023-11-06 21:16:58,567 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:16:58,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 76 [2023-11-06 21:16:58,577 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-11-06 21:16:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2023-11-06 21:16:58,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 25 [2023-11-06 21:16:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,627 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2023-11-06 21:16:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,655 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:16:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2023-11-06 21:16:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:58,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:17:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061928826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:00,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:00,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 51 [2023-11-06 21:17:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904525964] [2023-11-06 21:17:00,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:00,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-06 21:17:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-06 21:17:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2238, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 21:17:00,851 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 51 states, 51 states have (on average 1.7450980392156863) internal successors, (89), 51 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:06,168 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2023-11-06 21:17:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-06 21:17:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7450980392156863) internal successors, (89), 51 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-06 21:17:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:06,170 INFO L225 Difference]: With dead ends: 125 [2023-11-06 21:17:06,170 INFO L226 Difference]: Without dead ends: 110 [2023-11-06 21:17:06,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1911, Invalid=8391, Unknown=0, NotChecked=0, Total=10302 [2023-11-06 21:17:06,176 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 635 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 195 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:17:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-06 21:17:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 52. [2023-11-06 21:17:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-11-06 21:17:06,193 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 32 [2023-11-06 21:17:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:06,193 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-11-06 21:17:06,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7450980392156863) internal successors, (89), 51 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-11-06 21:17:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 21:17:06,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:06,195 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:06,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:06,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:17:06,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:06,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1098043278, now seen corresponding path program 6 times [2023-11-06 21:17:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197448859] [2023-11-06 21:17:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197448859] [2023-11-06 21:17:06,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197448859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:06,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888046995] [2023-11-06 21:17:06,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 21:17:06,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:06,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:06,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:17:07,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-11-06 21:17:07,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:07,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:17:07,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:07,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888046995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:08,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-11-06 21:17:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165638686] [2023-11-06 21:17:08,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 21:17:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 21:17:08,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2023-11-06 21:17:08,225 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:08,898 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2023-11-06 21:17:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:17:08,898 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-06 21:17:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:08,899 INFO L225 Difference]: With dead ends: 102 [2023-11-06 21:17:08,899 INFO L226 Difference]: Without dead ends: 85 [2023-11-06 21:17:08,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2023-11-06 21:17:08,901 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 139 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:08,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 242 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:17:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-06 21:17:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 54. [2023-11-06 21:17:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2023-11-06 21:17:08,932 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 38 [2023-11-06 21:17:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:08,933 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2023-11-06 21:17:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2023-11-06 21:17:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:17:08,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:08,935 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:08,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:09,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:09,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash -840159798, now seen corresponding path program 7 times [2023-11-06 21:17:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505963404] [2023-11-06 21:17:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:17:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505963404] [2023-11-06 21:17:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505963404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672357088] [2023-11-06 21:17:09,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 21:17:09,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:09,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:09,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:17:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:09,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:17:09,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:17:09,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:17:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672357088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-11-06 21:17:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926497053] [2023-11-06 21:17:09,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 21:17:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 21:17:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:17:09,985 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:10,260 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2023-11-06 21:17:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:17:10,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-06 21:17:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:10,264 INFO L225 Difference]: With dead ends: 95 [2023-11-06 21:17:10,264 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 21:17:10,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-11-06 21:17:10,266 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:10,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 82 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:17:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 21:17:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2023-11-06 21:17:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-11-06 21:17:10,291 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 40 [2023-11-06 21:17:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:10,292 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-11-06 21:17:10,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-11-06 21:17:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:17:10,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:10,299 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:10,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 21:17:10,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:10,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:10,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -871665808, now seen corresponding path program 8 times [2023-11-06 21:17:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124908545] [2023-11-06 21:17:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124908545] [2023-11-06 21:17:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124908545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865326054] [2023-11-06 21:17:11,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:17:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:11,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:17:11,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:17:11,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:11,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:17:11,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:11,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:17:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865326054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:12,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:12,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2023-11-06 21:17:12,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640120810] [2023-11-06 21:17:12,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:12,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 21:17:12,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:12,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 21:17:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 21:17:12,070 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:12,510 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2023-11-06 21:17:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:17:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-06 21:17:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:12,512 INFO L225 Difference]: With dead ends: 86 [2023-11-06 21:17:12,512 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 21:17:12,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 21:17:12,517 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:12,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 76 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:17:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 21:17:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 43. [2023-11-06 21:17:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2023-11-06 21:17:12,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2023-11-06 21:17:12,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:12,541 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2023-11-06 21:17:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2023-11-06 21:17:12,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 21:17:12,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:12,544 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:12,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:12,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 21:17:12,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:12,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1640463246, now seen corresponding path program 9 times [2023-11-06 21:17:12,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:12,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275810594] [2023-11-06 21:17:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:17:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275810594] [2023-11-06 21:17:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275810594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150259399] [2023-11-06 21:17:14,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:17:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:14,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:14,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:17:14,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 21:17:14,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:14,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 21:17:14,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:14,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:17:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:15,287 INFO L351 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 30 treesize of output 23 [2023-11-06 21:17:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 21:17:16,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:16,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:17:16,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 258 [2023-11-06 21:17:16,987 INFO L322 Elim1Store]: treesize reduction 10, result has 72.2 percent of original size [2023-11-06 21:17:16,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 108 [2023-11-06 21:17:17,027 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,028 INFO L351 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 52 treesize of output 38 [2023-11-06 21:17:17,137 INFO L322 Elim1Store]: treesize reduction 10, result has 72.2 percent of original size [2023-11-06 21:17:17,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 71 [2023-11-06 21:17:17,226 INFO L322 Elim1Store]: treesize reduction 22, result has 38.9 percent of original size [2023-11-06 21:17:17,227 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 59 [2023-11-06 21:17:17,291 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 21:17:17,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 79 [2023-11-06 21:17:17,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,373 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-06 21:17:17,373 INFO L351 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 1 [2023-11-06 21:17:17,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,456 INFO L322 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2023-11-06 21:17:17,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 90 [2023-11-06 21:17:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,557 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:17:17,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 1 [2023-11-06 21:17:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2023-11-06 21:17:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,617 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-06 21:17:17,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 56 [2023-11-06 21:17:17,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 21:17:17,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2023-11-06 21:17:17,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,658 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 25 [2023-11-06 21:17:17,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,676 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 51 [2023-11-06 21:17:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:17,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 21:17:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150259399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:19,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 48 [2023-11-06 21:17:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397853643] [2023-11-06 21:17:19,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:19,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-06 21:17:19,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-06 21:17:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1982, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 21:17:19,137 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:24,783 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2023-11-06 21:17:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-06 21:17:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-11-06 21:17:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:24,785 INFO L225 Difference]: With dead ends: 164 [2023-11-06 21:17:24,785 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 21:17:24,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1801, Invalid=10631, Unknown=0, NotChecked=0, Total=12432 [2023-11-06 21:17:24,791 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 534 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:24,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 418 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 21:17:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 21:17:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 59. [2023-11-06 21:17:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2023-11-06 21:17:24,811 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 42 [2023-11-06 21:17:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:24,811 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2023-11-06 21:17:24,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2023-11-06 21:17:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-06 21:17:24,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:24,812 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:24,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:25,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 21:17:25,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:25,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -61892860, now seen corresponding path program 10 times [2023-11-06 21:17:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644269060] [2023-11-06 21:17:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:25,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:17:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644269060] [2023-11-06 21:17:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644269060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:27,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477800279] [2023-11-06 21:17:27,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:17:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:27,865 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:27,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:17:28,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:17:28,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:28,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-06 21:17:28,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:28,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:17:28,334 INFO L322 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2023-11-06 21:17:28,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 25 [2023-11-06 21:17:28,524 INFO L322 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2023-11-06 21:17:28,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 28 [2023-11-06 21:17:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 21:17:29,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:30,696 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:17:30,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11702 treesize of output 11166 [2023-11-06 21:17:40,242 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:17:40,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7259 treesize of output 6811 [2023-11-06 21:17:40,436 INFO L322 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2023-11-06 21:17:40,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18331 treesize of output 14880 [2023-11-06 21:17:40,677 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:17:40,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2552 treesize of output 1 [2023-11-06 21:17:40,701 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:17:40,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1691 treesize of output 1611 [2023-11-06 21:17:40,874 INFO L322 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2023-11-06 21:17:40,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14160 treesize of output 10933 [2023-11-06 21:17:41,005 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2469 treesize of output 1757 [2023-11-06 21:17:41,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,170 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,191 INFO L322 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-11-06 21:17:41,193 INFO L351 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 600 treesize of output 1 [2023-11-06 21:17:41,210 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,218 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,229 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,284 INFO L322 Elim1Store]: treesize reduction 5, result has 86.1 percent of original size [2023-11-06 21:17:41,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 152 [2023-11-06 21:17:41,312 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,320 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,358 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:17:41,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22284 treesize of output 1 [2023-11-06 21:17:41,367 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,390 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,391 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,400 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:41,426 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,436 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 1 [2023-11-06 21:17:41,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 1 [2023-11-06 21:17:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,478 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,479 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,495 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,503 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:41,518 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,525 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,532 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:41,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,546 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,547 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:41,575 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,585 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,602 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:41,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3925 treesize of output 1 [2023-11-06 21:17:41,610 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,618 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,634 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,654 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:41,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5226 treesize of output 1 [2023-11-06 21:17:41,692 INFO L322 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-06 21:17:41,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 15038 treesize of output 1 [2023-11-06 21:17:41,714 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1716 treesize of output 1 [2023-11-06 21:17:41,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,723 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:41,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 1 [2023-11-06 21:17:41,749 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-06 21:17:41,771 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:41,788 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1716 treesize of output 1 [2023-11-06 21:17:41,819 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:17:41,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16003 treesize of output 1 [2023-11-06 21:17:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,828 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:41,850 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2133 treesize of output 1 [2023-11-06 21:17:41,866 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:41,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3032 treesize of output 1 [2023-11-06 21:17:41,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,874 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,874 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,900 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2886 treesize of output 1 [2023-11-06 21:17:41,924 INFO L322 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-06 21:17:41,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 10867 treesize of output 1 [2023-11-06 21:17:41,937 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:41,938 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2171 treesize of output 1 [2023-11-06 21:17:41,962 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:41,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9476 treesize of output 1 [2023-11-06 21:17:41,982 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:41,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1716 treesize of output 1 [2023-11-06 21:17:41,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,989 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,990 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:41,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 1 [2023-11-06 21:17:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:42,022 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,028 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,036 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,037 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,053 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:42,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3064 treesize of output 1 [2023-11-06 21:17:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,063 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,064 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,077 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:42,109 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:42,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1267 treesize of output 1 [2023-11-06 21:17:42,138 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:17:42,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12826 treesize of output 1 [2023-11-06 21:17:42,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,144 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,145 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,149 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:42,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,168 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,179 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,190 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,191 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2023-11-06 21:17:42,216 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 21:17:42,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5130 treesize of output 1 [2023-11-06 21:17:42,225 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:42,248 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:42,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6679 treesize of output 1 [2023-11-06 21:17:42,266 INFO L322 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-11-06 21:17:42,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2020 treesize of output 1 [2023-11-06 21:17:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,297 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,308 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:17:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,325 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:17:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 89 [2023-11-06 21:17:42,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3466 treesize of output 3402 [2023-11-06 21:17:42,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4219 treesize of output 4155 [2023-11-06 21:17:42,490 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:17:42,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,501 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-11-06 21:17:42,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3851 treesize of output 3787 [2023-11-06 21:17:42,534 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:42,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 1 [2023-11-06 21:17:42,545 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:42,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 1 [2023-11-06 21:17:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:42,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1268 treesize of output 1244 [2023-11-06 21:17:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-11-06 21:17:42,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 399 [2023-11-06 21:17:42,620 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:42,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 1 [2023-11-06 21:17:42,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15229 treesize of output 14973 [2023-11-06 21:17:42,722 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:42,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 1 [2023-11-06 21:17:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:42,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19984 treesize of output 19600 [2023-11-06 21:17:42,792 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:42,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 1 [2023-11-06 21:17:42,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2023-11-06 21:17:42,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 958 treesize of output 942 [2023-11-06 21:17:42,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11692 treesize of output 11500 [2023-11-06 21:17:42,896 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:42,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 1 [2023-11-06 21:17:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 177 [2023-11-06 21:17:42,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6997 treesize of output 6869 [2023-11-06 21:17:42,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:42,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 177 [2023-11-06 21:17:42,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1769 treesize of output 1737 [2023-11-06 21:17:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 133 [2023-11-06 21:17:43,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5655 treesize of output 5559 [2023-11-06 21:17:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,062 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 177 [2023-11-06 21:17:43,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6621 treesize of output 6493 [2023-11-06 21:17:43,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 177 [2023-11-06 21:17:43,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3557 treesize of output 3493 [2023-11-06 21:17:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 133 [2023-11-06 21:17:43,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5767 treesize of output 5671 [2023-11-06 21:17:43,197 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 237 treesize of output 1 [2023-11-06 21:17:43,205 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 1 [2023-11-06 21:17:43,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 89 [2023-11-06 21:17:43,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3979 treesize of output 3915 [2023-11-06 21:17:43,243 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 1 [2023-11-06 21:17:43,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11860 treesize of output 11668 [2023-11-06 21:17:43,297 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:43,297 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 1 [2023-11-06 21:17:43,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 177 [2023-11-06 21:17:43,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3515 treesize of output 3451 [2023-11-06 21:17:43,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:43,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5072 treesize of output 4976 [2023-11-06 21:17:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 44 [2023-11-06 21:17:43,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1974 treesize of output 1942 [2023-11-06 21:17:43,434 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 1 [2023-11-06 21:17:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-11-06 21:17:43,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3579 treesize of output 3515 [2023-11-06 21:17:43,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 89 [2023-11-06 21:17:43,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1651 treesize of output 1619 [2023-11-06 21:17:43,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,548 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 177 [2023-11-06 21:17:43,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30013 treesize of output 29501 [2023-11-06 21:17:43,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-11-06 21:17:43,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12731 treesize of output 12475 [2023-11-06 21:17:43,714 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 1 [2023-11-06 21:17:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:43,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21294 treesize of output 20910 [2023-11-06 21:17:43,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-11-06 21:17:43,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1915 treesize of output 1883 [2023-11-06 21:17:43,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2950 treesize of output 2902 [2023-11-06 21:17:43,844 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:43,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2023-11-06 21:17:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 89 [2023-11-06 21:17:43,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1715 treesize of output 1683 [2023-11-06 21:17:43,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:43,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2808 treesize of output 2760 [2023-11-06 21:17:43,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:43,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:43,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5268 treesize of output 5172 [2023-11-06 21:17:43,983 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:43,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 1 [2023-11-06 21:17:44,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20398 treesize of output 20078 [2023-11-06 21:17:44,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:44,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2580 treesize of output 2532 [2023-11-06 21:17:44,110 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:44,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 1 [2023-11-06 21:17:44,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 133 [2023-11-06 21:17:44,144 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2712 treesize of output 2664 [2023-11-06 21:17:44,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8323 treesize of output 8195 [2023-11-06 21:17:44,199 INFO L322 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-06 21:17:44,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 1 [2023-11-06 21:17:44,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 133 [2023-11-06 21:17:44,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2348 treesize of output 2300 [2023-11-06 21:17:44,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 177 [2023-11-06 21:17:44,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3163 treesize of output 3099 [2023-11-06 21:17:44,280 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:44,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 1 [2023-11-06 21:17:44,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2023-11-06 21:17:44,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1950 treesize of output 1918 [2023-11-06 21:17:44,315 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:44,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 1 [2023-11-06 21:17:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 44 [2023-11-06 21:17:44,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1746 treesize of output 1714 [2023-11-06 21:17:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 133 [2023-11-06 21:17:44,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5284 treesize of output 5188 [2023-11-06 21:17:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:44,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 133 [2023-11-06 21:17:44,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11414 treesize of output 11222 [2023-11-06 21:17:44,455 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:17:44,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 1 [2023-11-06 21:17:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 21:17:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477800279] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:44,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 52 [2023-11-06 21:17:44,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496044419] [2023-11-06 21:17:44,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-06 21:17:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-06 21:17:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 21:17:44,756 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 52 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:53,884 INFO L93 Difference]: Finished difference Result 195 states and 211 transitions. [2023-11-06 21:17:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-06 21:17:53,884 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 52 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-06 21:17:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:53,885 INFO L225 Difference]: With dead ends: 195 [2023-11-06 21:17:53,886 INFO L226 Difference]: Without dead ends: 193 [2023-11-06 21:17:53,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5588 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=2967, Invalid=17055, Unknown=0, NotChecked=0, Total=20022 [2023-11-06 21:17:53,892 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 588 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:53,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 491 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 21:17:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-06 21:17:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 116. [2023-11-06 21:17:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0695652173913044) internal successors, (123), 115 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2023-11-06 21:17:53,951 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 46 [2023-11-06 21:17:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:53,951 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2023-11-06 21:17:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 52 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2023-11-06 21:17:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 21:17:53,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:53,953 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:53,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:54,154 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:54,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1781463174, now seen corresponding path program 11 times [2023-11-06 21:17:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731235263] [2023-11-06 21:17:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:17:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731235263] [2023-11-06 21:17:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731235263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696838413] [2023-11-06 21:17:57,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:17:57,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:57,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:57,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c759a9ea-f509-451f-b6a4-16c5cbedb636/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:17:57,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-06 21:17:57,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:57,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-06 21:17:57,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:58,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 21:17:58,139 INFO L351 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 [2023-11-06 21:17:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,397 INFO L351 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 40 treesize of output 29 [2023-11-06 21:17:58,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,646 INFO L322 Elim1Store]: treesize reduction 32, result has 30.4 percent of original size [2023-11-06 21:17:58,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 60 [2023-11-06 21:17:58,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:58,967 INFO L322 Elim1Store]: treesize reduction 52, result has 21.2 percent of original size [2023-11-06 21:17:58,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 89 [2023-11-06 21:18:07,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:07,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:07,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:18:07,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 26 [2023-11-06 21:18:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:07,470 INFO L327 TraceCheckSpWp]: Computing backward predicates...