./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2971ec3e9ef2eef1d2151174358645d6ce0c6d4fe66ae89c00ded0f196979d8a --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:33:02,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:33:02,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:33:02,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:33:02,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:33:02,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:33:02,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:33:02,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:33:02,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:33:02,386 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:33:02,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:33:02,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:33:02,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:33:02,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:33:02,389 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:33:02,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:33:02,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:33:02,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:33:02,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:33:02,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:33:02,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:33:02,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:33:02,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:33:02,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:33:02,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:33:02,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:33:02,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:33:02,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:33:02,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:33:02,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:33:02,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:33:02,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:33:02,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:33:02,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:33:02,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:33:02,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:33:02,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:33:02,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:33:02,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:33:02,395 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:33:02,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:33:02,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:33:02,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2971ec3e9ef2eef1d2151174358645d6ce0c6d4fe66ae89c00ded0f196979d8a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:33:02,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:33:02,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:33:02,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:33:02,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:33:02,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:33:02,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2023-11-22 18:33:03,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:33:03,940 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:33:03,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2023-11-22 18:33:03,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903e60ebb/e17063506bb7490089a39355e12ba885/FLAG320724e0f [2023-11-22 18:33:03,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903e60ebb/e17063506bb7490089a39355e12ba885 [2023-11-22 18:33:03,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:33:03,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:33:03,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:33:03,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:33:03,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:33:03,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:33:03" (1/1) ... [2023-11-22 18:33:03,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a44054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:03, skipping insertion in model container [2023-11-22 18:33:03,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:33:03" (1/1) ... [2023-11-22 18:33:04,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:33:04,289 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i[24291,24304] [2023-11-22 18:33:04,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:33:04,305 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:33:04,349 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i[24291,24304] [2023-11-22 18:33:04,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:33:04,377 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:33:04,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04 WrapperNode [2023-11-22 18:33:04,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:33:04,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:33:04,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:33:04,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:33:04,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,432 INFO L138 Inliner]: procedures = 122, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 210 [2023-11-22 18:33:04,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:33:04,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:33:04,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:33:04,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:33:04,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,452 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,464 INFO L189 HeapSplitter]: Split 40 memory accesses to 3 slices as follows [2, 12, 26] [2023-11-22 18:33:04,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:33:04,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:33:04,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:33:04,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:33:04,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (1/1) ... [2023-11-22 18:33:04,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:33:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:04,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:33:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:33:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-22 18:33:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-22 18:33:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:33:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:33:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 18:33:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:33:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:33:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:33:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:33:04,645 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:33:04,647 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:33:04,704 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-22 18:33:04,899 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:33:04,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:33:04,927 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-22 18:33:04,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:33:04 BoogieIcfgContainer [2023-11-22 18:33:04,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:33:04,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:33:04,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:33:04,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:33:04,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:33:03" (1/3) ... [2023-11-22 18:33:04,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76896074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:33:04, skipping insertion in model container [2023-11-22 18:33:04,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:33:04" (2/3) ... [2023-11-22 18:33:04,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76896074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:33:04, skipping insertion in model container [2023-11-22 18:33:04,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:33:04" (3/3) ... [2023-11-22 18:33:04,935 INFO L112 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2023-11-22 18:33:04,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:33:04,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:33:04,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:33:04,995 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b357380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:33:04,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:33:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 47 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-22 18:33:05,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:05,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:05,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:05,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1035494790, now seen corresponding path program 1 times [2023-11-22 18:33:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466385082] [2023-11-22 18:33:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466385082] [2023-11-22 18:33:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466385082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:05,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 18:33:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474236467] [2023-11-22 18:33:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:33:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:33:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 18:33:05,256 INFO L87 Difference]: Start difference. First operand has 49 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 47 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2023-11-22 18:33:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:05,286 INFO L93 Difference]: Finished difference Result 97 states and 155 transitions. [2023-11-22 18:33:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:33:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2023-11-22 18:33:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:05,294 INFO L225 Difference]: With dead ends: 97 [2023-11-22 18:33:05,294 INFO L226 Difference]: Without dead ends: 42 [2023-11-22 18:33:05,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 18:33:05,301 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:33:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-22 18:33:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-22 18:33:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2023-11-22 18:33:05,332 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 15 [2023-11-22 18:33:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:05,333 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2023-11-22 18:33:05,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2023-11-22 18:33:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2023-11-22 18:33:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 18:33:05,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:05,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:33:05,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:05,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1634113901, now seen corresponding path program 1 times [2023-11-22 18:33:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:05,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616089051] [2023-11-22 18:33:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616089051] [2023-11-22 18:33:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616089051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 18:33:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624434457] [2023-11-22 18:33:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:33:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:33:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:33:05,443 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:05,470 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2023-11-22 18:33:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:33:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-22 18:33:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:05,472 INFO L225 Difference]: With dead ends: 70 [2023-11-22 18:33:05,473 INFO L226 Difference]: Without dead ends: 50 [2023-11-22 18:33:05,473 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 [2023-11-22 18:33:05,474 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:05,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:33:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-22 18:33:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-22 18:33:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.469387755102041) internal successors, (72), 49 states have internal predecessors, (72), 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) [2023-11-22 18:33:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-11-22 18:33:05,490 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 20 [2023-11-22 18:33:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-11-22 18:33:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-11-22 18:33:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-22 18:33:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:05,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:33:05,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:05,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1678369216, now seen corresponding path program 1 times [2023-11-22 18:33:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957416681] [2023-11-22 18:33:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957416681] [2023-11-22 18:33:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957416681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:05,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:33:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229496284] [2023-11-22 18:33:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:33:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:33:05,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:33:05,789 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-22 18:33:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:05,947 INFO L93 Difference]: Finished difference Result 153 states and 220 transitions. [2023-11-22 18:33:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:33:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-22 18:33:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:05,949 INFO L225 Difference]: With dead ends: 153 [2023-11-22 18:33:05,949 INFO L226 Difference]: Without dead ends: 117 [2023-11-22 18:33:05,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:33:05,950 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 95 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 183 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:33:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-22 18:33:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2023-11-22 18:33:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 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) [2023-11-22 18:33:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2023-11-22 18:33:05,961 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 26 [2023-11-22 18:33:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:05,961 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2023-11-22 18:33:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-22 18:33:05,962 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2023-11-22 18:33:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-22 18:33:05,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:05,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 18:33:05,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:05,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 860720766, now seen corresponding path program 1 times [2023-11-22 18:33:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952793902] [2023-11-22 18:33:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:06,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952793902] [2023-11-22 18:33:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952793902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:06,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:33:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347564913] [2023-11-22 18:33:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:33:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:33:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:33:06,126 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-22 18:33:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:06,202 INFO L93 Difference]: Finished difference Result 98 states and 137 transitions. [2023-11-22 18:33:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:33:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-22 18:33:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:06,204 INFO L225 Difference]: With dead ends: 98 [2023-11-22 18:33:06,205 INFO L226 Difference]: Without dead ends: 94 [2023-11-22 18:33:06,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:33:06,206 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 17 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:06,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 194 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:33:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-22 18:33:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2023-11-22 18:33:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 81 states have internal predecessors, (120), 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) [2023-11-22 18:33:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 120 transitions. [2023-11-22 18:33:06,220 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 120 transitions. Word has length 26 [2023-11-22 18:33:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:06,221 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 120 transitions. [2023-11-22 18:33:06,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-22 18:33:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 120 transitions. [2023-11-22 18:33:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 18:33:06,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:06,222 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] [2023-11-22 18:33:06,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:33:06,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:06,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1727351847, now seen corresponding path program 1 times [2023-11-22 18:33:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:06,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313281506] [2023-11-22 18:33:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:06,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313281506] [2023-11-22 18:33:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313281506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:06,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:33:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269068663] [2023-11-22 18:33:06,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:06,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:33:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:06,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:33:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:33:06,341 INFO L87 Difference]: Start difference. First operand 82 states and 120 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2023-11-22 18:33:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:06,400 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2023-11-22 18:33:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:33:06,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 28 [2023-11-22 18:33:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:06,402 INFO L225 Difference]: With dead ends: 100 [2023-11-22 18:33:06,402 INFO L226 Difference]: Without dead ends: 92 [2023-11-22 18:33:06,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:33:06,405 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 199 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:33:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-22 18:33:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2023-11-22 18:33:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.481012658227848) internal successors, (117), 79 states have internal predecessors, (117), 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) [2023-11-22 18:33:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 117 transitions. [2023-11-22 18:33:06,423 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 117 transitions. Word has length 28 [2023-11-22 18:33:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:06,424 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 117 transitions. [2023-11-22 18:33:06,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2023-11-22 18:33:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 117 transitions. [2023-11-22 18:33:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 18:33:06,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:06,425 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] [2023-11-22 18:33:06,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 18:33:06,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:06,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:06,426 INFO L85 PathProgramCache]: Analyzing trace with hash -702648871, now seen corresponding path program 1 times [2023-11-22 18:33:06,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:06,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647988725] [2023-11-22 18:33:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647988725] [2023-11-22 18:33:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647988725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:33:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:33:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:33:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49885879] [2023-11-22 18:33:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:33:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:33:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:33:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:33:06,552 INFO L87 Difference]: Start difference. First operand 80 states and 117 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2023-11-22 18:33:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:06,606 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2023-11-22 18:33:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:33:06,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 28 [2023-11-22 18:33:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:06,607 INFO L225 Difference]: With dead ends: 100 [2023-11-22 18:33:06,607 INFO L226 Difference]: Without dead ends: 89 [2023-11-22 18:33:06,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:33:06,609 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 13 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:06,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 187 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:33:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-22 18:33:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-11-22 18:33:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.486842105263158) internal successors, (113), 76 states have internal predecessors, (113), 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) [2023-11-22 18:33:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 113 transitions. [2023-11-22 18:33:06,620 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 113 transitions. Word has length 28 [2023-11-22 18:33:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:06,620 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 113 transitions. [2023-11-22 18:33:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2023-11-22 18:33:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 113 transitions. [2023-11-22 18:33:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-22 18:33:06,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:06,625 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] [2023-11-22 18:33:06,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 18:33:06,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:06,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1486366107, now seen corresponding path program 1 times [2023-11-22 18:33:06,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:06,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867188904] [2023-11-22 18:33:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:06,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867188904] [2023-11-22 18:33:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867188904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:06,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640761910] [2023-11-22 18:33:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:06,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:06,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:33:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:06,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-22 18:33:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:06,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:07,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:07,069 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:07,070 INFO L378 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 [2023-11-22 18:33:07,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-22 18:33:07,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:07,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:07,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:07,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-11-22 18:33:07,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:07,175 INFO L378 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 [2023-11-22 18:33:07,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-22 18:33:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:07,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640761910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:07,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:07,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-11-22 18:33:07,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831915444] [2023-11-22 18:33:07,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:07,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:33:07,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:33:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=117, Unknown=6, NotChecked=0, Total=156 [2023-11-22 18:33:07,255 INFO L87 Difference]: Start difference. First operand 77 states and 113 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:07,731 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2023-11-22 18:33:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:33:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-22 18:33:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:07,732 INFO L225 Difference]: With dead ends: 102 [2023-11-22 18:33:07,732 INFO L226 Difference]: Without dead ends: 96 [2023-11-22 18:33:07,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=219, Unknown=9, NotChecked=0, Total=306 [2023-11-22 18:33:07,733 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 55 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:07,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 382 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:33:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-22 18:33:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2023-11-22 18:33:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 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) [2023-11-22 18:33:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2023-11-22 18:33:07,736 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 30 [2023-11-22 18:33:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:07,736 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2023-11-22 18:33:07,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2023-11-22 18:33:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-22 18:33:07,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:07,737 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] [2023-11-22 18:33:07,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:33:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:07,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:07,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -622964443, now seen corresponding path program 1 times [2023-11-22 18:33:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:07,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421559359] [2023-11-22 18:33:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421559359] [2023-11-22 18:33:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421559359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821183004] [2023-11-22 18:33:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:08,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:08,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:33:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:08,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-22 18:33:08,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:08,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:08,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:08,283 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:08,283 INFO L378 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 [2023-11-22 18:33:08,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-22 18:33:08,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:08,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:08,340 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-11-22 18:33:09,493 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_277 Int) (v_ArrVal_280 (Array Int Int))) (= (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_277)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-11-22 18:33:09,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:09,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-11-22 18:33:09,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:09,513 INFO L378 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 [2023-11-22 18:33:09,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-22 18:33:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-22 18:33:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821183004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:09,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:09,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-22 18:33:09,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671730612] [2023-11-22 18:33:09,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:09,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 18:33:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 18:33:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=69, Unknown=2, NotChecked=34, Total=132 [2023-11-22 18:33:09,565 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:09,716 INFO L93 Difference]: Finished difference Result 113 states and 154 transitions. [2023-11-22 18:33:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:33:09,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-22 18:33:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:09,717 INFO L225 Difference]: With dead ends: 113 [2023-11-22 18:33:09,717 INFO L226 Difference]: Without dead ends: 109 [2023-11-22 18:33:09,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=173, Unknown=2, NotChecked=58, Total=306 [2023-11-22 18:33:09,718 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 64 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:09,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 438 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2023-11-22 18:33:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-22 18:33:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2023-11-22 18:33:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 94 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2023-11-22 18:33:09,721 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 30 [2023-11-22 18:33:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:09,721 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2023-11-22 18:33:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2023-11-22 18:33:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 18:33:09,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:09,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:33:09,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:33:09,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 18:33:09,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:09,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1395303424, now seen corresponding path program 1 times [2023-11-22 18:33:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:09,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746957575] [2023-11-22 18:33:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746957575] [2023-11-22 18:33:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746957575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365866217] [2023-11-22 18:33:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:10,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:10,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:10,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:10,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:33:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:10,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-22 18:33:10,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:10,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:10,430 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:10,430 INFO L378 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 [2023-11-22 18:33:10,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-22 18:33:10,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-22 18:33:10,509 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-22 18:33:10,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 73 [2023-11-22 18:33:10,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2023-11-22 18:33:10,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2023-11-22 18:33:10,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2023-11-22 18:33:10,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-22 18:33:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:10,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:10,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2023-11-22 18:33:10,596 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_356 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_356) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_357 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_357) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)))) is different from false [2023-11-22 18:33:10,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:10,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-22 18:33:10,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:10,618 INFO L378 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 38 treesize of output 31 [2023-11-22 18:33:10,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:10,632 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-22 18:33:10,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-11-22 18:33:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-22 18:33:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365866217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:10,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2023-11-22 18:33:10,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126037222] [2023-11-22 18:33:10,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 18:33:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 18:33:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=258, Unknown=1, NotChecked=32, Total=342 [2023-11-22 18:33:10,704 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:11,013 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2023-11-22 18:33:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:33:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 18:33:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:11,014 INFO L225 Difference]: With dead ends: 124 [2023-11-22 18:33:11,014 INFO L226 Difference]: Without dead ends: 120 [2023-11-22 18:33:11,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=476, Unknown=1, NotChecked=46, Total=650 [2023-11-22 18:33:11,015 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 185 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:11,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 506 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 248 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2023-11-22 18:33:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-22 18:33:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2023-11-22 18:33:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 105 states have internal predecessors, (148), 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) [2023-11-22 18:33:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 148 transitions. [2023-11-22 18:33:11,020 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 148 transitions. Word has length 32 [2023-11-22 18:33:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:11,020 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 148 transitions. [2023-11-22 18:33:11,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 148 transitions. [2023-11-22 18:33:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 18:33:11,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:11,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:11,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 18:33:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:11,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:11,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -808113957, now seen corresponding path program 1 times [2023-11-22 18:33:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086963769] [2023-11-22 18:33:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086963769] [2023-11-22 18:33:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086963769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492351583] [2023-11-22 18:33:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:11,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:11,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:11,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:11,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:33:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:11,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-22 18:33:11,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:11,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:11,715 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:11,716 INFO L378 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 [2023-11-22 18:33:11,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-22 18:33:11,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-22 18:33:11,771 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-22 18:33:11,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 73 [2023-11-22 18:33:11,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2023-11-22 18:33:11,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2023-11-22 18:33:11,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2023-11-22 18:33:11,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-22 18:33:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:11,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:11,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 30 [2023-11-22 18:33:11,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:11,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-22 18:33:11,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:11,893 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:11,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 18:33:11,903 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-22 18:33:11,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-11-22 18:33:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:11,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492351583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:11,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:11,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2023-11-22 18:33:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971955554] [2023-11-22 18:33:11,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:11,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-22 18:33:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-22 18:33:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=357, Unknown=4, NotChecked=0, Total=420 [2023-11-22 18:33:11,972 INFO L87 Difference]: Start difference. First operand 106 states and 148 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 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) [2023-11-22 18:33:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:12,240 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2023-11-22 18:33:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:33:12,241 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 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 34 [2023-11-22 18:33:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:12,242 INFO L225 Difference]: With dead ends: 126 [2023-11-22 18:33:12,242 INFO L226 Difference]: Without dead ends: 116 [2023-11-22 18:33:12,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=744, Unknown=4, NotChecked=0, Total=930 [2023-11-22 18:33:12,242 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 164 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:12,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 559 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:33:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-22 18:33:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2023-11-22 18:33:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 96 states have internal predecessors, (137), 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) [2023-11-22 18:33:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-11-22 18:33:12,247 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 34 [2023-11-22 18:33:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:12,247 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-11-22 18:33:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 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) [2023-11-22 18:33:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-11-22 18:33:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 18:33:12,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:12,247 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 18:33:12,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:33:12,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:12,459 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 216589019, now seen corresponding path program 2 times [2023-11-22 18:33:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678949823] [2023-11-22 18:33:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678949823] [2023-11-22 18:33:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678949823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659962566] [2023-11-22 18:33:12,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:33:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:12,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:33:12,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:33:12,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:33:12,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-22 18:33:12,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:12,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:12,922 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:12,923 INFO L378 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 [2023-11-22 18:33:12,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 18:33:12,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 18:33:12,973 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-22 18:33:12,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 57 [2023-11-22 18:33:12,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-22 18:33:12,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 19 [2023-11-22 18:33:13,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-11-22 18:33:13,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-22 18:33:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:13,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:13,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 30 [2023-11-22 18:33:13,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:13,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-22 18:33:13,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:13,098 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:13,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 18:33:13,113 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-22 18:33:13,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-11-22 18:33:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659962566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:13,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2023-11-22 18:33:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320437187] [2023-11-22 18:33:13,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:13,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 18:33:13,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 18:33:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=255, Unknown=6, NotChecked=0, Total=306 [2023-11-22 18:33:13,199 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2023-11-22 18:33:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:13,479 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2023-11-22 18:33:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:33:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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 34 [2023-11-22 18:33:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:13,480 INFO L225 Difference]: With dead ends: 121 [2023-11-22 18:33:13,480 INFO L226 Difference]: Without dead ends: 108 [2023-11-22 18:33:13,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=600, Unknown=6, NotChecked=0, Total=756 [2023-11-22 18:33:13,481 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 154 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:13,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 432 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:33:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-22 18:33:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2023-11-22 18:33:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 93 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2023-11-22 18:33:13,485 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 34 [2023-11-22 18:33:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:13,485 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2023-11-22 18:33:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2023-11-22 18:33:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2023-11-22 18:33:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 18:33:13,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:13,486 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:33:13,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:33:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 18:33:13,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:13,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1107758708, now seen corresponding path program 1 times [2023-11-22 18:33:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:13,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035763988] [2023-11-22 18:33:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035763988] [2023-11-22 18:33:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035763988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620852181] [2023-11-22 18:33:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:14,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:14,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:14,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:14,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:33:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:14,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-22 18:33:14,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:14,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:14,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:14,194 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-22 18:33:14,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-22 18:33:14,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-22 18:33:14,272 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:14,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-22 18:33:14,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:14,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:14,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:14,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:16,393 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_623 (Array Int Int)) (v_ArrVal_625 (Array Int Int))) (= (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_623) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_625) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-11-22 18:33:17,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:17,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-11-22 18:33:17,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:17,727 INFO L378 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 60 treesize of output 63 [2023-11-22 18:33:17,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-22 18:33:17,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-11-22 18:33:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:20,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620852181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:20,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:20,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2023-11-22 18:33:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823938564] [2023-11-22 18:33:20,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:20,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 18:33:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 18:33:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=497, Unknown=12, NotChecked=46, Total=650 [2023-11-22 18:33:20,679 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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) [2023-11-22 18:33:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:20,982 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2023-11-22 18:33:20,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:33:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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 34 [2023-11-22 18:33:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:20,983 INFO L225 Difference]: With dead ends: 102 [2023-11-22 18:33:20,983 INFO L226 Difference]: Without dead ends: 98 [2023-11-22 18:33:20,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=172, Invalid=690, Unknown=12, NotChecked=56, Total=930 [2023-11-22 18:33:20,983 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 127 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:20,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 766 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 326 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2023-11-22 18:33:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-22 18:33:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-22 18:33:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 97 states have internal predecessors, (137), 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) [2023-11-22 18:33:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2023-11-22 18:33:20,988 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 34 [2023-11-22 18:33:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:20,988 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2023-11-22 18:33:20,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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) [2023-11-22 18:33:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2023-11-22 18:33:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-22 18:33:20,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:20,988 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 18:33:21,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:33:21,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:21,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:21,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1418387111, now seen corresponding path program 3 times [2023-11-22 18:33:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469457346] [2023-11-22 18:33:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:21,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:33:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:33:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469457346] [2023-11-22 18:33:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469457346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:33:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795554398] [2023-11-22 18:33:21,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:33:21,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:33:21,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:33:21,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:33:21,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 18:33:21,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:33:21,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-22 18:33:21,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:33:21,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-22 18:33:22,026 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-22 18:33:22,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-22 18:33:22,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 18:33:22,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:22,134 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-22 18:33:22,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-22 18:33:22,149 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-11-22 18:33:22,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-22 18:33:22,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 18:33:22,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-22 18:33:22,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-22 18:33:22,247 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-11-22 18:33:22,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 89 [2023-11-22 18:33:22,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-11-22 18:33:22,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2023-11-22 18:33:22,386 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-22 18:33:22,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 89 [2023-11-22 18:33:22,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 18:33:22,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-11-22 18:33:22,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-11-22 18:33:22,509 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-22 18:33:22,510 INFO L378 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 57 treesize of output 36 [2023-11-22 18:33:22,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-11-22 18:33:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:33:22,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:33:22,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:22,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 79 [2023-11-22 18:33:22,766 INFO L349 Elim1Store]: treesize reduction 4, result has 91.7 percent of original size [2023-11-22 18:33:22,766 INFO L378 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 5486 treesize of output 5170 [2023-11-22 18:33:22,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:22,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 548 treesize of output 539 [2023-11-22 18:33:23,390 INFO L349 Elim1Store]: treesize reduction 40, result has 68.0 percent of original size [2023-11-22 18:33:23,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 325 treesize of output 475 [2023-11-22 18:33:23,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-22 18:33:23,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-11-22 18:33:23,979 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-11-22 18:33:23,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 49 treesize of output 39 [2023-11-22 18:33:23,998 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-22 18:33:23,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 52 treesize of output 18 [2023-11-22 18:33:24,033 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-11-22 18:33:24,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 49 treesize of output 39 [2023-11-22 18:33:24,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-11-22 18:33:24,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2023-11-22 18:33:25,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-22 18:33:25,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-11-22 18:33:25,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,108 INFO L378 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 91 treesize of output 90 [2023-11-22 18:33:25,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2023-11-22 18:33:25,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,135 INFO L378 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 114 treesize of output 114 [2023-11-22 18:33:25,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,156 INFO L378 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 107 treesize of output 106 [2023-11-22 18:33:25,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,166 INFO L378 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 163 treesize of output 115 [2023-11-22 18:33:25,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-22 18:33:25,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2023-11-22 18:33:25,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,302 INFO L378 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 61 treesize of output 54 [2023-11-22 18:33:25,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,308 INFO L378 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 27 [2023-11-22 18:33:25,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2023-11-22 18:33:25,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,337 INFO L378 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 61 treesize of output 54 [2023-11-22 18:33:25,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,349 INFO L378 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 29 [2023-11-22 18:33:25,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,373 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,381 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:25,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,395 INFO L378 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 20 treesize of output 20 [2023-11-22 18:33:25,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,408 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:25,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,420 INFO L378 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 22 treesize of output 22 [2023-11-22 18:33:25,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-22 18:33:25,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 52 [2023-11-22 18:33:25,447 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,457 INFO L378 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 39 treesize of output 38 [2023-11-22 18:33:25,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 74 [2023-11-22 18:33:25,479 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 48 [2023-11-22 18:33:25,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,533 INFO L378 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 70 treesize of output 70 [2023-11-22 18:33:25,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,575 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:25,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,590 INFO L378 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 36 treesize of output 35 [2023-11-22 18:33:25,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,597 INFO L378 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 22 treesize of output 22 [2023-11-22 18:33:25,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,613 INFO L378 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 33 [2023-11-22 18:33:25,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2023-11-22 18:33:25,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2023-11-22 18:33:25,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,644 INFO L378 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 27 [2023-11-22 18:33:25,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2023-11-22 18:33:25,673 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2023-11-22 18:33:25,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,698 INFO L378 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 40 treesize of output 32 [2023-11-22 18:33:25,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:25,726 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-22 18:33:25,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-22 18:33:25,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,779 INFO L378 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 25 [2023-11-22 18:33:25,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,791 INFO L378 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 20 treesize of output 20 [2023-11-22 18:33:25,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-22 18:33:25,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-11-22 18:33:25,824 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2023-11-22 18:33:25,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2023-11-22 18:33:25,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,850 INFO L378 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 36 [2023-11-22 18:33:25,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,903 INFO L378 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 70 treesize of output 70 [2023-11-22 18:33:25,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-22 18:33:25,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 52 [2023-11-22 18:33:25,947 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:25,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2023-11-22 18:33:25,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:25,966 INFO L378 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 70 treesize of output 70 [2023-11-22 18:33:25,980 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:26,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 82 [2023-11-22 18:33:26,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2023-11-22 18:33:26,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:26,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-22 18:33:26,200 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:26,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-22 18:33:26,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,221 INFO L378 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 33 [2023-11-22 18:33:26,229 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 18:33:26,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-22 18:33:26,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:33:26,244 INFO L378 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 25 [2023-11-22 18:33:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:33:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795554398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:33:29,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:33:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 29 [2023-11-22 18:33:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80824381] [2023-11-22 18:33:29,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:33:29,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-22 18:33:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:33:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-22 18:33:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=710, Unknown=1, NotChecked=0, Total=812 [2023-11-22 18:33:29,223 INFO L87 Difference]: Start difference. First operand 98 states and 137 transitions. Second operand has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:32,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-22 18:33:34,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-22 18:33:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:33:35,081 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2023-11-22 18:33:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 18:33:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-22 18:33:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:33:35,082 INFO L225 Difference]: With dead ends: 145 [2023-11-22 18:33:35,082 INFO L226 Difference]: Without dead ends: 139 [2023-11-22 18:33:35,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=405, Invalid=2245, Unknown=2, NotChecked=0, Total=2652 [2023-11-22 18:33:35,083 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 227 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 42 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:33:35,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 634 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 426 Invalid, 9 Unknown, 0 Unchecked, 5.0s Time] [2023-11-22 18:33:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-22 18:33:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2023-11-22 18:33:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.382608695652174) internal successors, (159), 115 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 159 transitions. [2023-11-22 18:33:35,088 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 159 transitions. Word has length 36 [2023-11-22 18:33:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:33:35,089 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 159 transitions. [2023-11-22 18:33:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:33:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 159 transitions. [2023-11-22 18:33:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-22 18:33:35,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:33:35,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:35,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:33:35,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:33:35,300 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:33:35,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:33:35,301 INFO L85 PathProgramCache]: Analyzing trace with hash 644451175, now seen corresponding path program 1 times [2023-11-22 18:33:35,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:33:35,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104018037] [2023-11-22 18:33:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:33:35,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:33:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:33:35,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 18:33:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:33:35,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 18:33:35,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 18:33:35,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 18:33:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 18:33:35,349 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:33:35,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 18:33:35,378 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-22 18:33:35,378 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated [2023-11-22 18:33:35,378 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-22 18:33:35,379 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem24 [2023-11-22 18:33:35,379 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated [2023-11-22 18:33:35,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 06:33:35 BoogieIcfgContainer [2023-11-22 18:33:35,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 18:33:35,390 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 18:33:35,390 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 18:33:35,390 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 18:33:35,391 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:33:04" (3/4) ... [2023-11-22 18:33:35,391 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-22 18:33:35,400 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-22 18:33:35,401 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated [2023-11-22 18:33:35,401 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-22 18:33:35,401 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated [2023-11-22 18:33:35,401 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem24 [2023-11-22 18:33:35,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 18:33:35,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 18:33:35,430 INFO L158 Benchmark]: Toolchain (without parser) took 31461.94ms. Allocated memory was 134.2MB in the beginning and 465.6MB in the end (delta: 331.4MB). Free memory was 61.0MB in the beginning and 184.7MB in the end (delta: -123.6MB). Peak memory consumption was 210.5MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,430 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 18:33:35,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.43ms. Allocated memory is still 134.2MB. Free memory was 60.8MB in the beginning and 96.3MB in the end (delta: -35.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.85ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,434 INFO L158 Benchmark]: Boogie Preprocessor took 48.41ms. Allocated memory is still 134.2MB. Free memory was 93.7MB in the beginning and 90.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,435 INFO L158 Benchmark]: RCFGBuilder took 444.48ms. Allocated memory is still 134.2MB. Free memory was 90.4MB in the beginning and 90.7MB in the end (delta: -299.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,435 INFO L158 Benchmark]: TraceAbstraction took 30460.57ms. Allocated memory was 134.2MB in the beginning and 465.6MB in the end (delta: 331.4MB). Free memory was 90.0MB in the beginning and 188.9MB in the end (delta: -98.9MB). Peak memory consumption was 235.0MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,435 INFO L158 Benchmark]: Witness Printer took 39.80ms. Allocated memory is still 465.6MB. Free memory was 188.9MB in the beginning and 184.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 18:33:35,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.43ms. Allocated memory is still 134.2MB. Free memory was 60.8MB in the beginning and 96.3MB in the end (delta: -35.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.85ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.41ms. Allocated memory is still 134.2MB. Free memory was 93.7MB in the beginning and 90.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.48ms. Allocated memory is still 134.2MB. Free memory was 90.4MB in the beginning and 90.7MB in the end (delta: -299.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30460.57ms. Allocated memory was 134.2MB in the beginning and 465.6MB in the end (delta: 331.4MB). Free memory was 90.0MB in the beginning and 188.9MB in the end (delta: -98.9MB). Peak memory consumption was 235.0MB. Max. memory is 16.1GB. * Witness Printer took 39.80ms. Allocated memory is still 465.6MB. Free memory was 188.9MB in the beginning and 184.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem24 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem24 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 620]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L553] root->left = ((void *)0) [L554] root->right = ((void *)0) [L555] COND FALSE !(__VERIFIER_nondet_int()) [L574] n = ((void *)0) [L575] struct TreeNode* pred; VAL [n={0:0}, root={-1:0}] [L576] COND TRUE \read(*root) [L577] pred = ((void *)0) [L578] n = root VAL [n={-1:0}, pred={0:0}, root={-1:0}] [L579] EXPR n->left [L579] n->left || n->right VAL [n={-1:0}, pred={0:0}, root={-1:0}] [L579] n->left || n->right [L579] EXPR n->right [L579] n->left || n->right VAL [n={-1:0}, pred={0:0}, root={-1:0}] [L579] COND FALSE !(n->left || n->right) [L586] COND FALSE !(\read(*pred)) [L592] root = ((void *)0) VAL [n={-1:0}, pred={0:0}, root={0:0}] [L576] COND FALSE !(\read(*root)) VAL [n={-1:0}, pred={0:0}, root={0:0}] [L595] List a = (List) malloc(sizeof(struct node)); [L596] COND FALSE !(a == 0) VAL [a={-2:0}, n={-1:0}, pred={0:0}, root={0:0}] [L597] List t; [L598] List p = a; VAL [a={-2:0}, n={-1:0}, p={-2:0}, pred={0:0}, root={0:0}] [L599] COND TRUE __VERIFIER_nondet_int() [L600] p->h = 1 [L601] t = (List) malloc(sizeof(struct node)) [L602] COND FALSE !(t == 0) VAL [a={-2:0}, n={-1:0}, p={-2:0}, pred={0:0}, root={0:0}, t={-3:0}] [L603] p->n = t [L604] EXPR p->n [L604] p = p->n [L599] COND FALSE !(__VERIFIER_nondet_int()) [L606] COND TRUE __VERIFIER_nondet_int() [L607] p->h = 2 [L608] t = (List) malloc(sizeof(struct node)) [L609] COND FALSE !(t == 0) VAL [a={-2:0}, n={-1:0}, p={-3:0}, pred={0:0}, root={0:0}, t={-4:0}] [L610] p->n = t [L611] EXPR p->n [L611] p = p->n [L606] COND FALSE !(__VERIFIER_nondet_int()) [L613] p->h = 3 [L614] p = a VAL [a={-2:0}, n={-1:0}, p={-2:0}, pred={0:0}, root={0:0}, t={-4:0}] [L615] EXPR p->h [L615] COND FALSE !(p->h == 2) [L617] EXPR p->h [L617] COND TRUE p->h == 1 [L618] EXPR p->n [L618] p = p->n [L617] EXPR p->h [L617] COND FALSE !(p->h == 1) [L619] EXPR p->h [L619] COND TRUE p->h != 3 [L620] reach_error() VAL [a={-2:0}, n={-1:0}, p={-3:0}, pred={0:0}, root={0:0}, t={-4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.4s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 1146 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1146 mSDsluCounter, 4638 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 254 IncrementalHoareTripleChecker+Unchecked, 3963 mSDsCounter, 211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2037 IncrementalHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 211 mSolverCounterUnsat, 675 mSDtfsCounter, 2037 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 403 SyntacticMatches, 3 SemanticMatches, 211 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=13, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 176 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 639 NumberOfCodeBlocks, 639 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 806 ConstructedInterpolants, 71 QuantifiedInterpolants, 13716 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1452 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 42/137 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-22 18:33:35,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE