./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/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_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:57:25,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:57:25,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-06 21:57:25,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:57:25,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:57:25,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:57:25,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:57:25,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:57:25,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:57:25,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:57:25,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:57:25,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:57:25,871 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:57:25,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:57:25,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:57:25,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:57:25,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:57:25,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:57:25,876 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:57:25,876 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:57:25,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:57:25,877 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:57:25,878 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:57:25,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:57:25,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:57:25,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:57:25,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:57:25,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:57:25,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:25,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:57:25,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:57:25,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:57:25,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:57:25,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:57:25,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:57:25,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:57:25,884 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:57:25,885 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_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2023-11-06 21:57:26,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:57:26,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:57:26,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:57:26,246 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:57:26,247 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:57:26,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2023-11-06 21:57:29,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:57:29,566 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:57:29,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2023-11-06 21:57:29,591 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/data/c1b19b02e/e0fe69c2960a4095aff637333c32e1de/FLAGa6491080c [2023-11-06 21:57:29,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/data/c1b19b02e/e0fe69c2960a4095aff637333c32e1de [2023-11-06 21:57:29,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:57:29,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:57:29,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:29,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:57:29,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:57:29,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:29" (1/1) ... [2023-11-06 21:57:29,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab402fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:29, skipping insertion in model container [2023-11-06 21:57:29,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:29" (1/1) ... [2023-11-06 21:57:29,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:57:30,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:30,097 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:57:30,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:30,205 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:57:30,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30 WrapperNode [2023-11-06 21:57:30,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:30,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:30,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:57:30,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:57:30,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,285 INFO L138 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 191 [2023-11-06 21:57:30,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:30,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:57:30,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:57:30,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:57:30,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:57:30,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:57:30,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:57:30,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:57:30,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (1/1) ... [2023-11-06 21:57:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:30,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:30,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:57:30,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:57:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 21:57:30,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 21:57:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:57:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:57:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:57:30,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:57:30,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:57:30,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:57:30,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:57:30,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:57:30,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:57:30,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:57:30,553 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:30,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:57:31,121 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:57:31,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:57:31,130 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-06 21:57:31,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:31 BoogieIcfgContainer [2023-11-06 21:57:31,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:57:31,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:57:31,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:57:31,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:57:31,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:29" (1/3) ... [2023-11-06 21:57:31,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5b099f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:31, skipping insertion in model container [2023-11-06 21:57:31,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30" (2/3) ... [2023-11-06 21:57:31,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5b099f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:31, skipping insertion in model container [2023-11-06 21:57:31,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:31" (3/3) ... [2023-11-06 21:57:31,143 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2023-11-06 21:57:31,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:57:31,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2023-11-06 21:57:31,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:57:31,245 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@689e58dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:57:31,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-06 21:57:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 93 states have (on average 2.075268817204301) internal successors, (193), 156 states have internal predecessors, (193), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 21:57:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:57:31,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:31,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:57:31,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:31,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-06 21:57:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930351269] [2023-11-06 21:57:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,523 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 21:57:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930351269] [2023-11-06 21:57:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930351269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:31,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788881809] [2023-11-06 21:57:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:31,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:31,583 INFO L87 Difference]: Start difference. First operand has 164 states, 93 states have (on average 2.075268817204301) internal successors, (193), 156 states have internal predecessors, (193), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 21:57:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:31,809 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2023-11-06 21:57:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:31,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-06 21:57:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:31,821 INFO L225 Difference]: With dead ends: 158 [2023-11-06 21:57:31,821 INFO L226 Difference]: Without dead ends: 156 [2023-11-06 21:57:31,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:57:31,827 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 145 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:31,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 115 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:57:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-06 21:57:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2023-11-06 21:57:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 85 states have (on average 1.9058823529411764) internal successors, (162), 150 states have internal predecessors, (162), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2023-11-06 21:57:31,873 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 3 [2023-11-06 21:57:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:31,874 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2023-11-06 21:57:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 21:57:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2023-11-06 21:57:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:57:31,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:31,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:57:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:57:31,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:31,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-06 21:57:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57878625] [2023-11-06 21:57:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,965 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 21:57:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57878625] [2023-11-06 21:57:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57878625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:31,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:31,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:31,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895471116] [2023-11-06 21:57:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:31,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:31,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:31,970 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 21:57:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:32,136 INFO L93 Difference]: Finished difference Result 154 states and 170 transitions. [2023-11-06 21:57:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:32,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-06 21:57:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:32,138 INFO L225 Difference]: With dead ends: 154 [2023-11-06 21:57:32,138 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 21:57:32,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:57:32,141 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 143 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:32,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 113 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:57:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 21:57:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2023-11-06 21:57:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 85 states have (on average 1.8823529411764706) internal successors, (160), 148 states have internal predecessors, (160), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2023-11-06 21:57:32,155 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 3 [2023-11-06 21:57:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:32,156 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2023-11-06 21:57:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 21:57:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2023-11-06 21:57:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:57:32,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:32,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:32,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:57:32,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:32,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:32,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1771462867, now seen corresponding path program 1 times [2023-11-06 21:57:32,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:32,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566855438] [2023-11-06 21:57:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:32,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:32,431 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 21:57:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566855438] [2023-11-06 21:57:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566855438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:32,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42796365] [2023-11-06 21:57:32,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:32,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:32,438 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 21:57:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:32,662 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2023-11-06 21:57:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:32,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-06 21:57:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:32,664 INFO L225 Difference]: With dead ends: 159 [2023-11-06 21:57:32,664 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 21:57:32,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:32,666 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 256 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:32,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 90 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:57:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 21:57:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2023-11-06 21:57:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.707070707070707) internal successors, (169), 146 states have internal predecessors, (169), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2023-11-06 21:57:32,685 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 8 [2023-11-06 21:57:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:32,685 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2023-11-06 21:57:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 21:57:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2023-11-06 21:57:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:57:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:32,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:32,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:57:32,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:32,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1771462866, now seen corresponding path program 1 times [2023-11-06 21:57:32,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:32,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953856682] [2023-11-06 21:57:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:32,939 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 21:57:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953856682] [2023-11-06 21:57:32,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953856682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:32,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:32,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736675542] [2023-11-06 21:57:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:32,943 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 21:57:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:33,241 INFO L93 Difference]: Finished difference Result 222 states and 255 transitions. [2023-11-06 21:57:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-06 21:57:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:33,243 INFO L225 Difference]: With dead ends: 222 [2023-11-06 21:57:33,243 INFO L226 Difference]: Without dead ends: 222 [2023-11-06 21:57:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:33,245 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 288 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:33,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 139 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-06 21:57:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 194. [2023-11-06 21:57:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 145 states have (on average 1.5931034482758621) internal successors, (231), 192 states have internal predecessors, (231), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2023-11-06 21:57:33,269 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 8 [2023-11-06 21:57:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:33,269 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2023-11-06 21:57:33,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 21:57:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2023-11-06 21:57:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:57:33,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:33,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:33,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:57:33,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:33,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash -75925403, now seen corresponding path program 1 times [2023-11-06 21:57:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331967438] [2023-11-06 21:57:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:33,345 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 21:57:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:33,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331967438] [2023-11-06 21:57:33,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331967438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:33,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:33,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574594755] [2023-11-06 21:57:33,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:33,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:33,350 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:33,378 INFO L93 Difference]: Finished difference Result 234 states and 280 transitions. [2023-11-06 21:57:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 21:57:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:33,381 INFO L225 Difference]: With dead ends: 234 [2023-11-06 21:57:33,381 INFO L226 Difference]: Without dead ends: 234 [2023-11-06 21:57:33,381 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 21:57:33,383 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 104 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:33,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 216 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-06 21:57:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 204. [2023-11-06 21:57:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 155 states have (on average 1.5806451612903225) internal successors, (245), 202 states have internal predecessors, (245), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2023-11-06 21:57:33,396 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 12 [2023-11-06 21:57:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:33,397 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2023-11-06 21:57:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2023-11-06 21:57:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:57:33,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:33,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:57:33,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:33,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash -50514577, now seen corresponding path program 1 times [2023-11-06 21:57:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276227496] [2023-11-06 21:57:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:33,557 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 21:57:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:33,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276227496] [2023-11-06 21:57:33,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276227496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:33,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:33,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:57:33,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402139505] [2023-11-06 21:57:33,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:33,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:57:33,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:33,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:57:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:57:33,561 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:33,876 INFO L93 Difference]: Finished difference Result 210 states and 256 transitions. [2023-11-06 21:57:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:57:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:33,879 INFO L225 Difference]: With dead ends: 210 [2023-11-06 21:57:33,879 INFO L226 Difference]: Without dead ends: 210 [2023-11-06 21:57:33,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:57:33,881 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 95 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:33,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 351 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-06 21:57:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2023-11-06 21:57:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 155 states have (on average 1.5677419354838709) internal successors, (243), 201 states have internal predecessors, (243), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 249 transitions. [2023-11-06 21:57:33,891 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 249 transitions. Word has length 12 [2023-11-06 21:57:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:33,891 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 249 transitions. [2023-11-06 21:57:33,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 249 transitions. [2023-11-06 21:57:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:57:33,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:33,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:57:33,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:33,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -50514576, now seen corresponding path program 1 times [2023-11-06 21:57:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060563331] [2023-11-06 21:57:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:34,148 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 21:57:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060563331] [2023-11-06 21:57:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060563331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:57:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742826987] [2023-11-06 21:57:34,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:57:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:57:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:57:34,152 INFO L87 Difference]: Start difference. First operand 203 states and 249 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:34,495 INFO L93 Difference]: Finished difference Result 199 states and 242 transitions. [2023-11-06 21:57:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:57:34,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:34,497 INFO L225 Difference]: With dead ends: 199 [2023-11-06 21:57:34,498 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 21:57:34,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:57:34,503 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 15 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:34,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 444 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:57:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 21:57:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2023-11-06 21:57:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 150 states have (on average 1.5333333333333334) internal successors, (230), 191 states have internal predecessors, (230), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 236 transitions. [2023-11-06 21:57:34,516 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 236 transitions. Word has length 12 [2023-11-06 21:57:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 236 transitions. [2023-11-06 21:57:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:57:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 236 transitions. [2023-11-06 21:57:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 21:57:34,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:34,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:34,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:57:34,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:34,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash -264919041, now seen corresponding path program 1 times [2023-11-06 21:57:34,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:34,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324721011] [2023-11-06 21:57:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324721011] [2023-11-06 21:57:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324721011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:57:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028152706] [2023-11-06 21:57:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:34,646 INFO L87 Difference]: Start difference. First operand 193 states and 236 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:34,804 INFO L93 Difference]: Finished difference Result 220 states and 251 transitions. [2023-11-06 21:57:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:34,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-06 21:57:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:34,807 INFO L225 Difference]: With dead ends: 220 [2023-11-06 21:57:34,807 INFO L226 Difference]: Without dead ends: 220 [2023-11-06 21:57:34,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:34,809 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 256 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:34,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 198 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:57:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-06 21:57:34,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 192. [2023-11-06 21:57:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 190 states have internal predecessors, (227), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 232 transitions. [2023-11-06 21:57:34,818 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 232 transitions. Word has length 23 [2023-11-06 21:57:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:34,818 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 232 transitions. [2023-11-06 21:57:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 232 transitions. [2023-11-06 21:57:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 21:57:34,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:34,823 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:34,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:57:34,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:34,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1632603559, now seen corresponding path program 1 times [2023-11-06 21:57:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873535947] [2023-11-06 21:57:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:35,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873535947] [2023-11-06 21:57:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873535947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503173754] [2023-11-06 21:57:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:35,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:35,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:35,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:57:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:35,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 21:57:35,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:35,599 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:57:35,739 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 21:57:35,740 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 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 21:57:35,845 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 21:57:36,055 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:57:36,056 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-06 21:57:36,151 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 21:57:36,152 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 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-06 21:57:36,341 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 21:57:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:36,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:38,979 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:38,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-11-06 21:57:38,999 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:39,000 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 34 treesize of output 37 [2023-11-06 21:57:39,009 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 11 treesize of output 9 [2023-11-06 21:57:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503173754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:39,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-11-06 21:57:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125863202] [2023-11-06 21:57:39,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:39,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 21:57:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 21:57:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=743, Unknown=4, NotChecked=0, Total=870 [2023-11-06 21:57:39,970 INFO L87 Difference]: Start difference. First operand 192 states and 232 transitions. Second operand has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:42,670 INFO L93 Difference]: Finished difference Result 385 states and 453 transitions. [2023-11-06 21:57:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:57:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 21:57:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:42,673 INFO L225 Difference]: With dead ends: 385 [2023-11-06 21:57:42,674 INFO L226 Difference]: Without dead ends: 385 [2023-11-06 21:57:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=340, Invalid=1548, Unknown=4, NotChecked=0, Total=1892 [2023-11-06 21:57:42,675 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 997 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:42,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1238 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 21:57:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-06 21:57:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 214. [2023-11-06 21:57:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 172 states have (on average 1.4767441860465116) internal successors, (254), 212 states have internal predecessors, (254), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 259 transitions. [2023-11-06 21:57:42,686 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 259 transitions. Word has length 27 [2023-11-06 21:57:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:42,686 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 259 transitions. [2023-11-06 21:57:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 259 transitions. [2023-11-06 21:57:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 21:57:42,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:42,688 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:42,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:42,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:42,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1632603558, now seen corresponding path program 1 times [2023-11-06 21:57:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194221603] [2023-11-06 21:57:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194221603] [2023-11-06 21:57:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194221603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:43,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801403080] [2023-11-06 21:57:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:43,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:43,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:43,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:57:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:57:43,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:43,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:57:43,802 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:57:43,803 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 11 treesize of output 11 [2023-11-06 21:57:43,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2023-11-06 21:57:43,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:57:43,884 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 21:57:44,086 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:57:44,086 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-06 21:57:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:44,103 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 16 treesize of output 11 [2023-11-06 21:57:44,187 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 21:57:44,187 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 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 21:57:44,193 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 11 [2023-11-06 21:57:44,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 21:57:44,429 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 21:57:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:44,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:45,157 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_70| Int) (v_ArrVal_279 (Array Int Int))) (or (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_279) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_70| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (forall ((v_ArrVal_280 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_70| Int) (v_ArrVal_279 (Array Int Int))) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_279) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_70| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_70|)))) is different from false [2023-11-06 21:57:45,204 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_280 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_70| Int) (v_ArrVal_279 (Array Int Int))) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_279) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_280) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_70| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_70| Int) (v_ArrVal_279 (Array Int Int))) (or (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_279) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_70|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_70| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_70|))))) is different from false [2023-11-06 21:57:45,264 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:45,264 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-11-06 21:57:45,278 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:45,279 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 34 treesize of output 37 [2023-11-06 21:57:45,288 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 11 treesize of output 9 [2023-11-06 21:57:45,349 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:45,350 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2023-11-06 21:57:45,362 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:45,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-06 21:57:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:45,377 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-11-06 21:57:45,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:45,392 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-06 21:57:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:45,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801403080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:45,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:45,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-11-06 21:57:45,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713277760] [2023-11-06 21:57:45,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:45,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 21:57:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 21:57:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=773, Unknown=5, NotChecked=114, Total=992 [2023-11-06 21:57:45,741 INFO L87 Difference]: Start difference. First operand 214 states and 259 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 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 21:57:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:48,620 INFO L93 Difference]: Finished difference Result 384 states and 452 transitions. [2023-11-06 21:57:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:57:48,622 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 21:57:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:48,624 INFO L225 Difference]: With dead ends: 384 [2023-11-06 21:57:48,624 INFO L226 Difference]: Without dead ends: 384 [2023-11-06 21:57:48,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=367, Invalid=1798, Unknown=5, NotChecked=182, Total=2352 [2023-11-06 21:57:48,626 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1720 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 814 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:48,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 1027 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1462 Invalid, 0 Unknown, 814 Unchecked, 1.8s Time] [2023-11-06 21:57:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-06 21:57:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 214. [2023-11-06 21:57:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 172 states have (on average 1.4709302325581395) internal successors, (253), 212 states have internal predecessors, (253), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2023-11-06 21:57:48,636 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 258 transitions. Word has length 27 [2023-11-06 21:57:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:48,638 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 258 transitions. [2023-11-06 21:57:48,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 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 21:57:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 258 transitions. [2023-11-06 21:57:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 21:57:48,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:48,647 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:48,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:57:48,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:48,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:48,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1260214297, now seen corresponding path program 1 times [2023-11-06 21:57:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965747784] [2023-11-06 21:57:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965747784] [2023-11-06 21:57:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965747784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:48,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147197529] [2023-11-06 21:57:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:48,905 INFO L87 Difference]: Start difference. First operand 214 states and 258 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 21:57:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:48,918 INFO L93 Difference]: Finished difference Result 216 states and 260 transitions. [2023-11-06 21:57:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:48,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-06 21:57:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:48,921 INFO L225 Difference]: With dead ends: 216 [2023-11-06 21:57:48,921 INFO L226 Difference]: Without dead ends: 216 [2023-11-06 21:57:48,921 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 21:57:48,922 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:48,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-06 21:57:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-06 21:57:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 174 states have (on average 1.4655172413793103) internal successors, (255), 214 states have internal predecessors, (255), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2023-11-06 21:57:48,932 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 29 [2023-11-06 21:57:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:48,933 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2023-11-06 21:57:48,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 21:57:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2023-11-06 21:57:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:57:48,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:48,936 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:48,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:57:48,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:48,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2081731414, now seen corresponding path program 1 times [2023-11-06 21:57:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87881722] [2023-11-06 21:57:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87881722] [2023-11-06 21:57:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87881722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:49,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:57:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887834110] [2023-11-06 21:57:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:57:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:57:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:57:49,130 INFO L87 Difference]: Start difference. First operand 216 states and 260 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 21:57:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:49,483 INFO L93 Difference]: Finished difference Result 233 states and 279 transitions. [2023-11-06 21:57:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:57:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) Word has length 32 [2023-11-06 21:57:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:49,487 INFO L225 Difference]: With dead ends: 233 [2023-11-06 21:57:49,487 INFO L226 Difference]: Without dead ends: 233 [2023-11-06 21:57:49,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:57:49,488 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 34 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 574 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-06 21:57:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2023-11-06 21:57:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 182 states have (on average 1.4505494505494505) internal successors, (264), 222 states have internal predecessors, (264), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 269 transitions. [2023-11-06 21:57:49,496 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 269 transitions. Word has length 32 [2023-11-06 21:57:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:49,496 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 269 transitions. [2023-11-06 21:57:49,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 21:57:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 269 transitions. [2023-11-06 21:57:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:57:49,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:49,498 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:49,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:57:49,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:49,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:49,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2081790996, now seen corresponding path program 1 times [2023-11-06 21:57:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:49,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190892699] [2023-11-06 21:57:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:49,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:49,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190892699] [2023-11-06 21:57:49,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190892699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:49,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:49,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:49,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948541424] [2023-11-06 21:57:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:49,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:49,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:49,602 INFO L87 Difference]: Start difference. First operand 224 states and 269 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:57:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:49,700 INFO L93 Difference]: Finished difference Result 222 states and 263 transitions. [2023-11-06 21:57:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) Word has length 32 [2023-11-06 21:57:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:49,704 INFO L225 Difference]: With dead ends: 222 [2023-11-06 21:57:49,704 INFO L226 Difference]: Without dead ends: 222 [2023-11-06 21:57:49,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:57:49,706 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 66 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:49,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 166 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:57:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-06 21:57:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2023-11-06 21:57:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 182 states have (on average 1.4175824175824177) internal successors, (258), 219 states have internal predecessors, (258), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2023-11-06 21:57:49,715 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 32 [2023-11-06 21:57:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:49,716 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2023-11-06 21:57:49,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:57:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2023-11-06 21:57:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:57:49,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:49,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:49,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:57:49,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:49,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2081790997, now seen corresponding path program 1 times [2023-11-06 21:57:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:49,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231919238] [2023-11-06 21:57:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:49,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231919238] [2023-11-06 21:57:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231919238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038984513] [2023-11-06 21:57:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:49,888 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:57:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:49,989 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2023-11-06 21:57:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) Word has length 32 [2023-11-06 21:57:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:49,992 INFO L225 Difference]: With dead ends: 218 [2023-11-06 21:57:49,992 INFO L226 Difference]: Without dead ends: 218 [2023-11-06 21:57:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:57:49,993 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 71 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 145 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 21:57:49,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 145 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:57:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-06 21:57:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-11-06 21:57:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 182 states have (on average 1.3846153846153846) internal successors, (252), 216 states have internal predecessors, (252), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 257 transitions. [2023-11-06 21:57:50,001 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 257 transitions. Word has length 32 [2023-11-06 21:57:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 257 transitions. [2023-11-06 21:57:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:57:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 257 transitions. [2023-11-06 21:57:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:57:50,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:50,003 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:57:50,003 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:50,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 865510004, now seen corresponding path program 1 times [2023-11-06 21:57:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:50,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643890095] [2023-11-06 21:57:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643890095] [2023-11-06 21:57:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643890095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:57:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255118850] [2023-11-06 21:57:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:57:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:57:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:57:50,109 INFO L87 Difference]: Start difference. First operand 218 states and 257 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 21:57:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:50,499 INFO L93 Difference]: Finished difference Result 238 states and 278 transitions. [2023-11-06 21:57:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:57:50,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) Word has length 32 [2023-11-06 21:57:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:50,501 INFO L225 Difference]: With dead ends: 238 [2023-11-06 21:57:50,502 INFO L226 Difference]: Without dead ends: 238 [2023-11-06 21:57:50,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:57:50,502 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 99 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:50,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 322 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-06 21:57:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 217. [2023-11-06 21:57:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 182 states have (on average 1.379120879120879) internal successors, (251), 215 states have internal predecessors, (251), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2023-11-06 21:57:50,509 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 32 [2023-11-06 21:57:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:50,510 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2023-11-06 21:57:50,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 21:57:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2023-11-06 21:57:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:57:50,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:50,511 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:57:50,511 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:50,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash 865510005, now seen corresponding path program 1 times [2023-11-06 21:57:50,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:50,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514248015] [2023-11-06 21:57:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514248015] [2023-11-06 21:57:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514248015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074666961] [2023-11-06 21:57:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:51,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:51,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:51,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:57:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 21:57:51,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:51,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:57:51,294 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:57:51,294 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 11 treesize of output 11 [2023-11-06 21:57:51,354 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 21:57:51,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:57:51,429 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 21:57:51,505 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 16 treesize of output 11 [2023-11-06 21:57:51,543 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 16 treesize of output 11 [2023-11-06 21:57:51,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 21:57:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:51,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:52,013 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:52,013 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 31 treesize of output 35 [2023-11-06 21:57:52,270 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_75| Int) (v_ArrVal_531 (Array Int Int))) (or (< 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_531) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|) 1)) (< |v_ULTIMATE.start_main_~x~0#1.offset_75| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_75|))) is different from false [2023-11-06 21:57:52,519 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:52,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-11-06 21:57:52,531 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:57:52,532 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 34 treesize of output 37 [2023-11-06 21:57:52,539 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 9 treesize of output 7 [2023-11-06 21:57:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:52,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074666961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:52,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:52,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2023-11-06 21:57:52,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541711406] [2023-11-06 21:57:52,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-06 21:57:52,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-06 21:57:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=4, NotChecked=76, Total=1640 [2023-11-06 21:57:52,963 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:57,329 INFO L93 Difference]: Finished difference Result 429 states and 501 transitions. [2023-11-06 21:57:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 21:57:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-06 21:57:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:57,332 INFO L225 Difference]: With dead ends: 429 [2023-11-06 21:57:57,332 INFO L226 Difference]: Without dead ends: 429 [2023-11-06 21:57:57,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1130, Invalid=5676, Unknown=4, NotChecked=162, Total=6972 [2023-11-06 21:57:57,337 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1368 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:57,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1849 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2316 Invalid, 0 Unknown, 413 Unchecked, 2.3s Time] [2023-11-06 21:57:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-06 21:57:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 239. [2023-11-06 21:57:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 237 states have internal predecessors, (279), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2023-11-06 21:57:57,348 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 32 [2023-11-06 21:57:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:57,349 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2023-11-06 21:57:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2023-11-06 21:57:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 21:57:57,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:57,350 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:57,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:57,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:57,556 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:57,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1100210079, now seen corresponding path program 1 times [2023-11-06 21:57:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158392971] [2023-11-06 21:57:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158392971] [2023-11-06 21:57:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158392971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:57:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016121496] [2023-11-06 21:57:57,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:57:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:57:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:57:57,680 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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 21:57:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:58,056 INFO L93 Difference]: Finished difference Result 259 states and 305 transitions. [2023-11-06 21:57:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:57:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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) Word has length 36 [2023-11-06 21:57:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:58,058 INFO L225 Difference]: With dead ends: 259 [2023-11-06 21:57:58,058 INFO L226 Difference]: Without dead ends: 259 [2023-11-06 21:57:58,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:57:58,059 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 87 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:58,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 321 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-06 21:57:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 245. [2023-11-06 21:57:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 216 states have (on average 1.3333333333333333) internal successors, (288), 243 states have internal predecessors, (288), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 293 transitions. [2023-11-06 21:57:58,067 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 293 transitions. Word has length 36 [2023-11-06 21:57:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:58,067 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 293 transitions. [2023-11-06 21:57:58,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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 21:57:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 293 transitions. [2023-11-06 21:57:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 21:57:58,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:58,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:58,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:57:58,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:58,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1100210078, now seen corresponding path program 1 times [2023-11-06 21:57:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:58,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075374579] [2023-11-06 21:57:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:58,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075374579] [2023-11-06 21:57:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075374579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005152694] [2023-11-06 21:57:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:58,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:58,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:57:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 21:57:58,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:58,938 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-06 21:57:58,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-06 21:57:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:59,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:59,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005152694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:59,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:57:59,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-11-06 21:57:59,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445942377] [2023-11-06 21:57:59,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:59,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:57:59,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:59,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:57:59,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:57:59,014 INFO L87 Difference]: Start difference. First operand 245 states and 293 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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 21:57:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:59,381 INFO L93 Difference]: Finished difference Result 254 states and 300 transitions. [2023-11-06 21:57:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:57:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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) Word has length 36 [2023-11-06 21:57:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:59,383 INFO L225 Difference]: With dead ends: 254 [2023-11-06 21:57:59,383 INFO L226 Difference]: Without dead ends: 254 [2023-11-06 21:57:59,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:57:59,384 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 48 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:59,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 389 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-06 21:57:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 243. [2023-11-06 21:57:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 216 states have (on average 1.3101851851851851) internal successors, (283), 241 states have internal predecessors, (283), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2023-11-06 21:57:59,392 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 36 [2023-11-06 21:57:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:59,392 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2023-11-06 21:57:59,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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 21:57:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2023-11-06 21:57:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 21:57:59,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:59,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:59,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:59,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:57:59,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:57:59,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1777601274, now seen corresponding path program 1 times [2023-11-06 21:57:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347621462] [2023-11-06 21:57:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:00,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:00,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347621462] [2023-11-06 21:58:00,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347621462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:00,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266987409] [2023-11-06 21:58:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:00,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:00,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:00,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:58:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:00,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-06 21:58:00,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:00,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:58:00,703 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:58:00,704 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 11 treesize of output 11 [2023-11-06 21:58:00,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:58:00,775 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 21:58:01,006 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:58:01,007 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-06 21:58:01,024 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 19 treesize of output 18 [2023-11-06 21:58:01,170 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:58:01,171 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2023-11-06 21:58:01,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-06 21:58:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:01,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:02,123 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4))) (and (forall ((v_ArrVal_712 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_80| Int) (v_ArrVal_711 Int)) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_80|) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_712))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse1 .cse2 v_ArrVal_711)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_80|)) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_80|))) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_80| 0))) (not (= v_ArrVal_712 (store .cse3 .cse2 (select v_ArrVal_712 .cse2)))))) (forall ((v_ArrVal_712 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_80| Int) (v_ArrVal_711 Int)) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_80|) (= (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse1 .cse2 v_ArrVal_711)))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_80|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_712) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_80|)) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_80| 0))) (not (= v_ArrVal_712 (store .cse3 .cse2 (select v_ArrVal_712 .cse2)))))))) is different from false [2023-11-06 21:58:03,140 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:03,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 47797 treesize of output 44497 [2023-11-06 21:58:05,632 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:05,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 3597 treesize of output 3453 [2023-11-06 21:58:05,912 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:05,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3686 treesize of output 3694 [2023-11-06 21:58:06,783 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 6 treesize of output 4 [2023-11-06 21:58:07,131 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 6 treesize of output 4 [2023-11-06 21:58:38,233 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:38,233 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 38 treesize of output 42 [2023-11-06 21:58:38,240 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 23 treesize of output 21 [2023-11-06 21:58:38,293 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 6 treesize of output 4 [2023-11-06 21:58:38,327 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:38,327 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 27 treesize of output 31 [2023-11-06 21:58:38,535 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:38,537 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 4184 treesize of output 4042 [2023-11-06 21:58:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:39,403 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 42 treesize of output 36 [2023-11-06 21:58:39,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:58:39,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 364 [2023-11-06 21:58:39,656 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:39,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 277 treesize of output 197 [2023-11-06 21:58:39,773 INFO L322 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2023-11-06 21:58:39,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 421 treesize of output 401 [2023-11-06 21:58:39,935 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 21:58:39,948 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:58:39,960 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:58:39,960 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 82 treesize of output 76 [2023-11-06 21:58:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266987409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:40,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:40,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-06 21:58:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568698392] [2023-11-06 21:58:40,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:40,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 21:58:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 21:58:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1150, Unknown=2, NotChecked=68, Total=1332 [2023-11-06 21:58:40,547 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 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 21:58:45,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:45,561 INFO L93 Difference]: Finished difference Result 397 states and 467 transitions. [2023-11-06 21:58:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 21:58:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 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 36 [2023-11-06 21:58:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:45,564 INFO L225 Difference]: With dead ends: 397 [2023-11-06 21:58:45,564 INFO L226 Difference]: Without dead ends: 397 [2023-11-06 21:58:45,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=478, Invalid=3064, Unknown=2, NotChecked=116, Total=3660 [2023-11-06 21:58:45,566 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1314 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:45,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 1479 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1829 Invalid, 0 Unknown, 330 Unchecked, 2.8s Time] [2023-11-06 21:58:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-06 21:58:45,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 250. [2023-11-06 21:58:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 223 states have (on average 1.304932735426009) internal successors, (291), 248 states have internal predecessors, (291), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 296 transitions. [2023-11-06 21:58:45,575 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 296 transitions. Word has length 36 [2023-11-06 21:58:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:45,575 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 296 transitions. [2023-11-06 21:58:45,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 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 21:58:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 296 transitions. [2023-11-06 21:58:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 21:58:45,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:45,576 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:45,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:45,783 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:58:45,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1812997249, now seen corresponding path program 2 times [2023-11-06 21:58:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:45,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148112106] [2023-11-06 21:58:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:46,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148112106] [2023-11-06 21:58:46,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148112106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:46,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063814997] [2023-11-06 21:58:46,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:58:46,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:46,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:46,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:46,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:58:46,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:46,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:46,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 21:58:46,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:46,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:58:46,772 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:58:46,772 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 11 treesize of output 11 [2023-11-06 21:58:46,826 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 21:58:47,011 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:58:47,011 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-06 21:58:47,068 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:58:47,068 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-06 21:58:47,108 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:58:47,109 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 11 treesize of output 11 [2023-11-06 21:58:47,182 INFO L322 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-11-06 21:58:47,183 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 31 treesize of output 15 [2023-11-06 21:58:47,416 INFO L322 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-06 21:58:47,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 44 [2023-11-06 21:58:47,437 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 12 treesize of output 8 [2023-11-06 21:58:47,610 INFO L322 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-06 21:58:47,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 51 [2023-11-06 21:58:47,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 21:58:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:47,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:48,379 INFO L322 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2023-11-06 21:58:48,380 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 27 treesize of output 26 [2023-11-06 21:58:48,623 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:48,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-06 21:58:49,056 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:49,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2023-11-06 21:58:49,070 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:49,071 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 68 treesize of output 71 [2023-11-06 21:58:49,080 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 56 treesize of output 52 [2023-11-06 21:58:49,095 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:49,095 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 60 treesize of output 56 [2023-11-06 21:58:49,116 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 21:58:49,116 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 13 treesize of output 12 [2023-11-06 21:58:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063814997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:49,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2023-11-06 21:58:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113275773] [2023-11-06 21:58:49,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:49,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-06 21:58:49,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-06 21:58:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1719, Unknown=14, NotChecked=0, Total=1892 [2023-11-06 21:58:49,558 INFO L87 Difference]: Start difference. First operand 250 states and 296 transitions. Second operand has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 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 21:58:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:52,932 INFO L93 Difference]: Finished difference Result 434 states and 504 transitions. [2023-11-06 21:58:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-06 21:58:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 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 38 [2023-11-06 21:58:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:52,938 INFO L225 Difference]: With dead ends: 434 [2023-11-06 21:58:52,938 INFO L226 Difference]: Without dead ends: 434 [2023-11-06 21:58:52,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=607, Invalid=4209, Unknown=14, NotChecked=0, Total=4830 [2023-11-06 21:58:52,941 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 980 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:52,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1673 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 21:58:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-06 21:58:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 250. [2023-11-06 21:58:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 223 states have (on average 1.3004484304932735) internal successors, (290), 248 states have internal predecessors, (290), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 295 transitions. [2023-11-06 21:58:52,950 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 295 transitions. Word has length 38 [2023-11-06 21:58:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:52,951 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 295 transitions. [2023-11-06 21:58:52,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 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 21:58:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 295 transitions. [2023-11-06 21:58:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 21:58:52,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:52,952 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:52,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:53,158 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:58:53,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1812997248, now seen corresponding path program 2 times [2023-11-06 21:58:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965562913] [2023-11-06 21:58:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:54,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965562913] [2023-11-06 21:58:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965562913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606514935] [2023-11-06 21:58:54,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:58:54,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:54,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:54,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:54,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:58:54,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:54,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:54,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-06 21:58:54,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:54,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:58:54,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:58:54,877 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 21:58:54,877 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 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 21:58:54,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:58:54,978 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 21:58:55,229 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:58:55,229 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 31 [2023-11-06 21:58:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:55,252 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 16 treesize of output 11 [2023-11-06 21:58:55,339 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:58:55,339 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 21:58:55,359 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:58:55,359 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 31 [2023-11-06 21:58:55,446 INFO L322 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-11-06 21:58:55,447 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 20 treesize of output 22 [2023-11-06 21:58:55,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:58:55,537 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:58:55,538 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 16 treesize of output 15 [2023-11-06 21:58:55,561 INFO L322 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-11-06 21:58:55,561 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 52 treesize of output 28 [2023-11-06 21:58:55,828 INFO L322 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2023-11-06 21:58:55,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 48 [2023-11-06 21:58:55,858 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:58:55,858 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 21:58:56,010 INFO L322 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-06 21:58:56,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 69 [2023-11-06 21:58:56,019 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 32 treesize of output 11 [2023-11-06 21:58:56,417 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 21:58:56,417 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 24 [2023-11-06 21:58:56,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 21:58:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:56,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:56,786 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int) (v_ArrVal_956 (Array Int Int))) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_956) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0))) (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int)) (or (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0)))) is different from false [2023-11-06 21:58:56,909 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int)) (or (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0))) (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int) (v_ArrVal_956 (Array Int Int))) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_956) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0)))) is different from false [2023-11-06 21:58:56,939 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int)) (or (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0))) (forall ((v_ArrVal_955 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int) (v_ArrVal_956 (Array Int Int))) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_955) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_956) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_91|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_91|) (< |v_ULTIMATE.start_main_~x~0#1.offset_91| 0))))) is different from false [2023-11-06 21:58:57,484 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:57,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2023-11-06 21:59:00,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2023-11-06 21:59:00,396 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,396 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 68 treesize of output 71 [2023-11-06 21:59:00,406 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 56 treesize of output 52 [2023-11-06 21:59:00,414 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 26 treesize of output 24 [2023-11-06 21:59:00,625 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2023-11-06 21:59:00,634 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2023-11-06 21:59:00,640 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:59:00,653 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,654 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 72 treesize of output 75 [2023-11-06 21:59:00,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:59:00,673 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,674 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 102 treesize of output 101 [2023-11-06 21:59:00,688 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:00,688 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 46 treesize of output 46 [2023-11-06 21:59:00,709 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 16 treesize of output 14 [2023-11-06 21:59:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-11-06 21:59:01,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606514935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:01,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:01,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 45 [2023-11-06 21:59:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140403822] [2023-11-06 21:59:01,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 21:59:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 21:59:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1622, Unknown=17, NotChecked=252, Total=2070 [2023-11-06 21:59:01,915 INFO L87 Difference]: Start difference. First operand 250 states and 295 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 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 21:59:04,249 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 [0] [2023-11-06 21:59:06,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:08,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:10,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:12,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:14,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:16,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:22,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:24,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:26,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 21:59:30,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 21:59:32,532 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 [0, 1] [2023-11-06 21:59:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:40,112 INFO L93 Difference]: Finished difference Result 459 states and 532 transitions. [2023-11-06 21:59:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-06 21:59:40,113 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 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 21:59:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:40,115 INFO L225 Difference]: With dead ends: 459 [2023-11-06 21:59:40,116 INFO L226 Difference]: Without dead ends: 459 [2023-11-06 21:59:40,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=1212, Invalid=7509, Unknown=33, NotChecked=558, Total=9312 [2023-11-06 21:59:40,120 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1769 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 180 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 4049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 1231 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:40,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1824 Invalid, 4049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2604 Invalid, 34 Unknown, 1231 Unchecked, 28.9s Time] [2023-11-06 21:59:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-06 21:59:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 255. [2023-11-06 21:59:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 228 states have (on average 1.2982456140350878) internal successors, (296), 253 states have internal predecessors, (296), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2023-11-06 21:59:40,129 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 38 [2023-11-06 21:59:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:40,130 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2023-11-06 21:59:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 0 states have call successors, (0), 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 21:59:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2023-11-06 21:59:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:59:40,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:40,131 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:40,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:40,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:59:40,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1894510923, now seen corresponding path program 1 times [2023-11-06 21:59:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:40,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911016577] [2023-11-06 21:59:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911016577] [2023-11-06 21:59:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911016577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639371722] [2023-11-06 21:59:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:41,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:59:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-06 21:59:41,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:41,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:59:41,559 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:41,559 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 11 treesize of output 11 [2023-11-06 21:59:41,580 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 21:59:41,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:59:41,749 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:59:41,750 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 21:59:41,771 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 21:59:41,772 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-06 21:59:41,850 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 21:59:41,850 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 1 case distinctions, treesize of input 60 treesize of output 53 [2023-11-06 21:59:41,855 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 11 [2023-11-06 21:59:41,860 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 19 treesize of output 11 [2023-11-06 21:59:42,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 21:59:42,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 21:59:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:42,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:42,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2023-11-06 21:59:43,165 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:43,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-06 21:59:43,176 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:43,177 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 30 treesize of output 33 [2023-11-06 21:59:43,187 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 9 treesize of output 7 [2023-11-06 21:59:43,234 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:59:43,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 1 [2023-11-06 21:59:43,248 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:43,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-06 21:59:43,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:59:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,257 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 21:59:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639371722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:43,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-11-06 21:59:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951254675] [2023-11-06 21:59:43,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-06 21:59:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-06 21:59:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=949, Unknown=1, NotChecked=0, Total=1056 [2023-11-06 21:59:43,545 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:45,859 INFO L93 Difference]: Finished difference Result 396 states and 463 transitions. [2023-11-06 21:59:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 21:59:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-06 21:59:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:45,864 INFO L225 Difference]: With dead ends: 396 [2023-11-06 21:59:45,864 INFO L226 Difference]: Without dead ends: 396 [2023-11-06 21:59:45,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=348, Invalid=2101, Unknown=1, NotChecked=0, Total=2450 [2023-11-06 21:59:45,866 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 822 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:45,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1177 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:59:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-06 21:59:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 263. [2023-11-06 21:59:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 236 states have (on average 1.2966101694915255) internal successors, (306), 261 states have internal predecessors, (306), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 311 transitions. [2023-11-06 21:59:45,874 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 311 transitions. Word has length 40 [2023-11-06 21:59:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 311 transitions. [2023-11-06 21:59:45,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 311 transitions. [2023-11-06 21:59:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 21:59:45,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:45,875 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:45,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:46,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:59:46,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1462909452, now seen corresponding path program 1 times [2023-11-06 21:59:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:46,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721051405] [2023-11-06 21:59:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721051405] [2023-11-06 21:59:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721051405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:46,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328793604] [2023-11-06 21:59:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:46,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:46,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:59:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:46,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 21:59:46,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:46,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:59:46,976 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:46,977 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 11 treesize of output 11 [2023-11-06 21:59:47,033 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 21:59:47,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:59:47,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 21:59:47,168 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 16 treesize of output 11 [2023-11-06 21:59:47,197 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 16 treesize of output 11 [2023-11-06 21:59:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:47,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:47,508 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 7 treesize of output 5 [2023-11-06 21:59:47,925 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1110 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_102| Int)) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_102|) (< |v_ULTIMATE.start_main_~x~0#1.offset_102| 0) (< 0 (+ (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1110) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_102|) 1)))) is different from false [2023-11-06 21:59:47,948 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-11-06 21:59:47,961 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,962 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 34 treesize of output 37 [2023-11-06 21:59:47,969 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 9 treesize of output 7 [2023-11-06 21:59:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328793604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:48,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2023-11-06 21:59:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076111016] [2023-11-06 21:59:48,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 21:59:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 21:59:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1119, Unknown=5, NotChecked=68, Total=1332 [2023-11-06 21:59:48,315 INFO L87 Difference]: Start difference. First operand 263 states and 311 transitions. Second operand has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 37 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 21:59:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:51,410 INFO L93 Difference]: Finished difference Result 451 states and 527 transitions. [2023-11-06 21:59:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-06 21:59:51,411 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 37 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 39 [2023-11-06 21:59:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:51,414 INFO L225 Difference]: With dead ends: 451 [2023-11-06 21:59:51,414 INFO L226 Difference]: Without dead ends: 451 [2023-11-06 21:59:51,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1243, Invalid=5562, Unknown=5, NotChecked=162, Total=6972 [2023-11-06 21:59:51,417 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1845 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 1266 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1544 Invalid, 0 Unknown, 402 Unchecked, 1.4s Time] [2023-11-06 21:59:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-06 21:59:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 276. [2023-11-06 21:59:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.3012048192771084) internal successors, (324), 274 states have internal predecessors, (324), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 329 transitions. [2023-11-06 21:59:51,427 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 329 transitions. Word has length 39 [2023-11-06 21:59:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:51,427 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 329 transitions. [2023-11-06 21:59:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 37 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 21:59:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 329 transitions. [2023-11-06 21:59:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 21:59:51,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:51,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:51,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 21:59:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:51,636 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 21:59:51,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 500552539, now seen corresponding path program 1 times [2023-11-06 21:59:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:51,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395532077] [2023-11-06 21:59:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:51,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395532077] [2023-11-06 21:59:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395532077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500641354] [2023-11-06 21:59:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:52,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:52,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:52,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:59:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:52,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-06 21:59:52,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:52,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:59:52,796 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:52,796 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 11 treesize of output 11 [2023-11-06 21:59:52,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:59:52,867 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 21:59:53,047 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:59:53,047 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 21:59:53,075 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:59:53,075 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-06 21:59:53,218 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:59:53,218 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2023-11-06 21:59:53,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-06 21:59:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:53,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:54,241 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4))) (and (forall ((v_ArrVal_1189 (Array Int Int))) (or (forall ((v_ArrVal_1187 Int) (|v_ULTIMATE.start_main_~x~0#1.offset_108| Int)) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse1 .cse2 v_ArrVal_1187)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1189) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|)) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) (not (= v_ArrVal_1189 (store .cse3 .cse2 (select v_ArrVal_1189 .cse2)))))) (forall ((v_ArrVal_1189 (Array Int Int))) (or (forall ((v_ArrVal_1187 Int) (|v_ULTIMATE.start_main_~x~0#1.offset_108| Int)) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (= (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1189))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse1 .cse2 v_ArrVal_1187)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|)) (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|))) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) (not (= v_ArrVal_1189 (store .cse3 .cse2 (select v_ArrVal_1189 .cse2)))))))) is different from false [2023-11-06 21:59:54,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3258 treesize of output 3226 [2023-11-06 21:59:55,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:55,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 332 [2023-11-06 21:59:55,133 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:55,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 752 treesize of output 800 [2023-11-06 21:59:55,361 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 6 treesize of output 4 [2023-11-06 21:59:55,819 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 408 treesize of output 372 [2023-11-06 21:59:57,047 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 408 treesize of output 372 [2023-11-06 21:59:58,301 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:58,302 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 213 [2023-11-06 21:59:58,899 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 202 treesize of output 178 [2023-11-06 22:00:00,813 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 408 treesize of output 372 [2023-11-06 22:00:04,127 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 22:00:05,229 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 22:00:05,295 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 15 treesize of output 3 [2023-11-06 22:00:05,344 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 22:00:05,437 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 22:00:05,869 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:05,870 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 76 treesize of output 80 [2023-11-06 22:00:10,959 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:10,967 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:11,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:11,003 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 30 treesize of output 24 [2023-11-06 22:00:11,132 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:11,145 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:11,501 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 6 treesize of output 4 [2023-11-06 22:00:11,895 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:12,281 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:15,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,546 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:15,547 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 407 treesize of output 414 [2023-11-06 22:00:15,595 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:15,596 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 37 treesize of output 55 [2023-11-06 22:00:15,728 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,731 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:15,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,739 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:15,766 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 98 treesize of output 94 [2023-11-06 22:00:15,790 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:15,894 INFO L322 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2023-11-06 22:00:15,894 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 438 treesize of output 434 [2023-11-06 22:00:15,978 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:15,979 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 39 treesize of output 57 [2023-11-06 22:00:16,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:16,420 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:16,421 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 341 treesize of output 349 [2023-11-06 22:00:16,477 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:16,477 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 39 treesize of output 57 [2023-11-06 22:00:17,218 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:17,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 638 treesize of output 692 [2023-11-06 22:00:17,273 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:17,273 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 54 treesize of output 73 [2023-11-06 22:00:17,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:17,962 INFO L322 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2023-11-06 22:00:17,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 553 treesize of output 577 [2023-11-06 22:00:18,001 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:18,001 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 61 [2023-11-06 22:00:19,787 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:19,817 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:19,819 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 256 [2023-11-06 22:00:19,864 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:19,865 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 37 treesize of output 55 [2023-11-06 22:00:19,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:19,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:19,973 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 29 treesize of output 27 [2023-11-06 22:00:19,994 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:19,995 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 29 treesize of output 31 [2023-11-06 22:00:20,051 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:00:20,051 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 88 treesize of output 1 [2023-11-06 22:00:20,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:20,098 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,099 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 122 [2023-11-06 22:00:20,117 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,118 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 48 treesize of output 53 [2023-11-06 22:00:20,204 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,205 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 127 [2023-11-06 22:00:20,258 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:20,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:20,307 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,307 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 352 treesize of output 372 [2023-11-06 22:00:20,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,337 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 33 treesize of output 38 [2023-11-06 22:00:20,409 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:20,659 INFO L322 Elim1Store]: treesize reduction 8, result has 93.4 percent of original size [2023-11-06 22:00:20,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 818 treesize of output 880 [2023-11-06 22:00:20,802 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:20,802 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 251 treesize of output 292 [2023-11-06 22:00:21,390 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:21,515 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:21,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 536 treesize of output 592 [2023-11-06 22:00:21,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:21,992 INFO L322 Elim1Store]: treesize reduction 1088, result has 0.1 percent of original size [2023-11-06 22:00:21,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 18 new quantified variables, introduced 136 case distinctions, treesize of input 4655 treesize of output 1 [2023-11-06 22:00:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,024 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 9 treesize of output 7 [2023-11-06 22:00:22,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,046 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:22,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,051 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,054 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:22,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,091 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:00:22,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,152 INFO L322 Elim1Store]: treesize reduction 440, result has 0.2 percent of original size [2023-11-06 22:00:22,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 3182 treesize of output 1 [2023-11-06 22:00:22,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,360 INFO L322 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2023-11-06 22:00:22,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 988 treesize of output 1 [2023-11-06 22:00:22,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,385 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:00:22,386 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 31 treesize of output 1 [2023-11-06 22:00:22,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:22,418 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 256 treesize of output 244 [2023-11-06 22:00:22,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,474 INFO L322 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-06 22:00:22,474 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 728 treesize of output 1 [2023-11-06 22:00:22,519 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,572 INFO L322 Elim1Store]: treesize reduction 960, result has 0.1 percent of original size [2023-11-06 22:00:22,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 120 case distinctions, treesize of input 8490 treesize of output 1 [2023-11-06 22:00:22,624 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,728 INFO L322 Elim1Store]: treesize reduction 2600, result has 0.0 percent of original size [2023-11-06 22:00:22,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 27 new quantified variables, introduced 325 case distinctions, treesize of input 10118 treesize of output 1 [2023-11-06 22:00:22,810 INFO L322 Elim1Store]: treesize reduction 624, result has 0.2 percent of original size [2023-11-06 22:00:22,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 4027 treesize of output 1 [2023-11-06 22:00:22,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:22,965 INFO L322 Elim1Store]: treesize reduction 2024, result has 0.0 percent of original size [2023-11-06 22:00:22,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 24 new quantified variables, introduced 253 case distinctions, treesize of input 11966 treesize of output 1 [2023-11-06 22:00:23,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:23,138 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:23,214 INFO L322 Elim1Store]: treesize reduction 82, result has 20.4 percent of original size [2023-11-06 22:00:23,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1298 treesize of output 1114 [2023-11-06 22:00:23,281 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:23,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 559 treesize of output 543 [2023-11-06 22:00:23,326 INFO L322 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-11-06 22:00:23,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 568 treesize of output 564 [2023-11-06 22:00:23,365 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:23,384 INFO L322 Elim1Store]: treesize reduction 22, result has 21.4 percent of original size [2023-11-06 22:00:23,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 554 treesize of output 540 [2023-11-06 22:00:23,423 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 6 treesize of output 4 [2023-11-06 22:00:23,764 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 6 treesize of output 4 [2023-11-06 22:00:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:00:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500641354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:00:24,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:00:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-06 22:00:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126069421] [2023-11-06 22:00:24,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:00:24,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 22:00:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 22:00:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1150, Unknown=2, NotChecked=68, Total=1332 [2023-11-06 22:00:24,369 INFO L87 Difference]: Start difference. First operand 276 states and 329 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 22:00:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:30,132 INFO L93 Difference]: Finished difference Result 388 states and 455 transitions. [2023-11-06 22:00:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:00:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 45 [2023-11-06 22:00:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:30,134 INFO L225 Difference]: With dead ends: 388 [2023-11-06 22:00:30,135 INFO L226 Difference]: Without dead ends: 388 [2023-11-06 22:00:30,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=463, Invalid=2961, Unknown=2, NotChecked=114, Total=3540 [2023-11-06 22:00:30,136 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 733 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:30,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1354 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1725 Invalid, 0 Unknown, 304 Unchecked, 3.5s Time] [2023-11-06 22:00:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-06 22:00:30,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 277. [2023-11-06 22:00:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 250 states have (on average 1.3) internal successors, (325), 275 states have internal predecessors, (325), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 330 transitions. [2023-11-06 22:00:30,144 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 330 transitions. Word has length 45 [2023-11-06 22:00:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:30,145 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 330 transitions. [2023-11-06 22:00:30,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 22:00:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 330 transitions. [2023-11-06 22:00:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:00:30,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:30,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:30,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:30,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:00:30,361 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 22:00:30,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1809545684, now seen corresponding path program 1 times [2023-11-06 22:00:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:30,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294690783] [2023-11-06 22:00:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:00:30,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:30,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294690783] [2023-11-06 22:00:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294690783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:30,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:30,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:30,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111326005] [2023-11-06 22:00:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:30,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:30,415 INFO L87 Difference]: Start difference. First operand 277 states and 330 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:30,427 INFO L93 Difference]: Finished difference Result 275 states and 327 transitions. [2023-11-06 22:00:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-06 22:00:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:30,429 INFO L225 Difference]: With dead ends: 275 [2023-11-06 22:00:30,429 INFO L226 Difference]: Without dead ends: 275 [2023-11-06 22:00:30,430 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 22:00:30,430 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:30,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:00:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-06 22:00:30,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2023-11-06 22:00:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 250 states have (on average 1.288) internal successors, (322), 273 states have internal predecessors, (322), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 327 transitions. [2023-11-06 22:00:30,443 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 327 transitions. Word has length 47 [2023-11-06 22:00:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:30,444 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 327 transitions. [2023-11-06 22:00:30,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 327 transitions. [2023-11-06 22:00:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:00:30,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:30,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:00:30,446 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 22:00:30,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 638620335, now seen corresponding path program 1 times [2023-11-06 22:00:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037175909] [2023-11-06 22:00:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:00:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037175909] [2023-11-06 22:00:30,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037175909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:30,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:00:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508921197] [2023-11-06 22:00:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:30,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:00:30,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:00:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:30,556 INFO L87 Difference]: Start difference. First operand 275 states and 327 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:30,764 INFO L93 Difference]: Finished difference Result 312 states and 365 transitions. [2023-11-06 22:00:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:00:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-06 22:00:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:30,767 INFO L225 Difference]: With dead ends: 312 [2023-11-06 22:00:30,767 INFO L226 Difference]: Without dead ends: 312 [2023-11-06 22:00:30,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:00:30,768 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 195 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:30,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 261 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:00:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-06 22:00:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 274. [2023-11-06 22:00:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 249 states have (on average 1.285140562248996) internal successors, (320), 272 states have internal predecessors, (320), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 325 transitions. [2023-11-06 22:00:30,776 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 325 transitions. Word has length 48 [2023-11-06 22:00:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:30,777 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 325 transitions. [2023-11-06 22:00:30,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 325 transitions. [2023-11-06 22:00:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:00:30,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:30,778 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:00:30,778 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-06 22:00:30,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1306627220, now seen corresponding path program 2 times [2023-11-06 22:00:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967623676] [2023-11-06 22:00:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:00:32,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967623676] [2023-11-06 22:00:32,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967623676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444504547] [2023-11-06 22:00:32,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:00:32,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:32,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:32,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:00:32,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a516cb-c254-40b6-a68a-2b5b0c72f92b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:00:32,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:00:32,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:32,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-06 22:00:32,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:32,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:00:32,473 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:00:32,473 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 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:00:32,567 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 22:00:32,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:00:32,893 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:00:32,893 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:00:32,922 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 22:00:32,922 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-06 22:00:33,084 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:00:33,085 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:00:33,118 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 22:00:33,119 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-06 22:00:33,249 INFO L322 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-11-06 22:00:33,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-11-06 22:00:33,392 INFO L322 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-11-06 22:00:33,392 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 52 treesize of output 28 [2023-11-06 22:00:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:00:33,415 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 16 treesize of output 11 [2023-11-06 22:00:33,733 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:00:33,733 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:00:33,770 INFO L322 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2023-11-06 22:00:33,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 49 [2023-11-06 22:00:33,939 INFO L322 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-06 22:00:33,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 70 [2023-11-06 22:00:33,954 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 32 treesize of output 11 [2023-11-06 22:00:34,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:00:34,746 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:00:34,747 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 29 [2023-11-06 22:00:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:00:34,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:00:35,735 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:35,735 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2023-11-06 22:00:36,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:36,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 71 [2023-11-06 22:00:36,347 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:36,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 55 [2023-11-06 22:00:36,367 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:36,367 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 192 treesize of output 195 [2023-11-06 22:00:38,619 INFO L322 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2023-11-06 22:00:38,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 2288 treesize of output 2513 [2023-11-06 22:00:38,847 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:38,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 588 treesize of output 560 [2023-11-06 22:00:38,897 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 357 treesize of output 321 [2023-11-06 22:00:39,020 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:39,021 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 468 treesize of output 450 [2023-11-06 22:00:39,105 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 209 treesize of output 171