./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.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 e4cb0386e6b22b9d67dd4f4c4c33eb167dcf1836f99794e4424c5e73e6fc14d4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 23:46:26,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:46:26,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:46:26,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:46:26,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:46:26,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:46:26,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:46:26,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:46:26,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:46:26,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:46:26,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:46:26,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:46:26,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:46:26,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:46:26,463 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:46:26,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:46:26,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:46:26,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:46:26,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:46:26,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:46:26,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:46:26,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:46:26,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:46:26,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:46:26,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:46:26,473 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:46:26,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:46:26,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:46:26,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:46:26,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:46:26,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:46:26,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:46:26,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:46:26,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:46:26,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:46:26,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:46:26,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:46:26,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:46:26,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:46:26,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:46:26,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:46:26,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:46:26,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4cb0386e6b22b9d67dd4f4c4c33eb167dcf1836f99794e4424c5e73e6fc14d4 [2024-10-23 23:46:26,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:46:26,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:46:26,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:46:26,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:46:26,768 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:46:26,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2024-10-23 23:46:28,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:46:28,372 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:46:28,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2024-10-23 23:46:28,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf53c205a/e14b574197b34bf9991f7aace83ede33/FLAGb7037d582 [2024-10-23 23:46:28,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf53c205a/e14b574197b34bf9991f7aace83ede33 [2024-10-23 23:46:28,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:46:28,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:46:28,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:46:28,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:46:28,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:46:28,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:46:28" (1/1) ... [2024-10-23 23:46:28,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74286c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:28, skipping insertion in model container [2024-10-23 23:46:28,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:46:28" (1/1) ... [2024-10-23 23:46:28,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:46:29,069 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i[24076,24089] [2024-10-23 23:46:29,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:46:29,084 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:46:29,131 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i[24076,24089] [2024-10-23 23:46:29,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:46:29,165 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:46:29,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29 WrapperNode [2024-10-23 23:46:29,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:46:29,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:46:29,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:46:29,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:46:29,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,207 INFO L138 Inliner]: procedures = 127, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 105 [2024-10-23 23:46:29,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:46:29,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:46:29,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:46:29,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:46:29,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,238 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 5 writes are split as follows [0, 1, 4]. [2024-10-23 23:46:29,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:46:29,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:46:29,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:46:29,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:46:29,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (1/1) ... [2024-10-23 23:46:29,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:46:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:46:29,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 23:46:29,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 23:46:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 23:46:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-10-23 23:46:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-10-23 23:46:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-23 23:46:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:46:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 23:46:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-23 23:46:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 23:46:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 23:46:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:46:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:46:29,460 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:46:29,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:46:29,624 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-10-23 23:46:29,625 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:46:29,664 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:46:29,665 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-23 23:46:29,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:46:29 BoogieIcfgContainer [2024-10-23 23:46:29,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:46:29,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:46:29,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:46:29,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:46:29,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:46:28" (1/3) ... [2024-10-23 23:46:29,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba174e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:46:29, skipping insertion in model container [2024-10-23 23:46:29,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:46:29" (2/3) ... [2024-10-23 23:46:29,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba174e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:46:29, skipping insertion in model container [2024-10-23 23:46:29,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:46:29" (3/3) ... [2024-10-23 23:46:29,674 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2024-10-23 23:46:29,688 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:46:29,688 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 23:46:29,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:46:29,736 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@171701a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:46:29,736 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 23:46:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 23:46:29,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:29,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:29,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:29,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2095146488, now seen corresponding path program 1 times [2024-10-23 23:46:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:29,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668885241] [2024-10-23 23:46:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:29,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-23 23:46:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:46:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668885241] [2024-10-23 23:46:30,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668885241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:46:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:46:30,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:46:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734431041] [2024-10-23 23:46:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:46:30,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:46:30,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:46:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:46:30,063 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:46:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:30,110 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2024-10-23 23:46:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:46:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-10-23 23:46:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:30,120 INFO L225 Difference]: With dead ends: 36 [2024-10-23 23:46:30,120 INFO L226 Difference]: Without dead ends: 15 [2024-10-23 23:46:30,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:46:30,128 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:30,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:46:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-23 23:46:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-23 23:46:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-23 23:46:30,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2024-10-23 23:46:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:30,164 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-23 23:46:30,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:46:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-23 23:46:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 23:46:30,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:30,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:30,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:46:30,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:30,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -523038448, now seen corresponding path program 1 times [2024-10-23 23:46:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:30,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595354411] [2024-10-23 23:46:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-23 23:46:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:46:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595354411] [2024-10-23 23:46:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595354411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:46:30,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:46:30,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 23:46:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157120997] [2024-10-23 23:46:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:46:30,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:46:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:46:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 23:46:30,388 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:46:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:30,431 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2024-10-23 23:46:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:46:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-10-23 23:46:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:30,433 INFO L225 Difference]: With dead ends: 29 [2024-10-23 23:46:30,433 INFO L226 Difference]: Without dead ends: 18 [2024-10-23 23:46:30,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 23:46:30,436 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:30,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:46:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-23 23:46:30,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2024-10-23 23:46:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-10-23 23:46:30,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-10-23 23:46:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:30,447 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-10-23 23:46:30,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:46:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-10-23 23:46:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-23 23:46:30,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:30,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:46:30,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:30,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1472129899, now seen corresponding path program 1 times [2024-10-23 23:46:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:30,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399423671] [2024-10-23 23:46:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:30,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:46:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-23 23:46:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:46:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399423671] [2024-10-23 23:46:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399423671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:46:30,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866203794] [2024-10-23 23:46:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:46:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:46:30,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:46:30,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 23:46:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:30,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 23:46:30,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:46:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:46:30,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:46:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:46:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866203794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:46:30,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:46:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2024-10-23 23:46:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020857456] [2024-10-23 23:46:30,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:46:30,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:46:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:46:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:46:30,918 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-23 23:46:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:30,965 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-10-23 23:46:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 23:46:30,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2024-10-23 23:46:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:30,966 INFO L225 Difference]: With dead ends: 30 [2024-10-23 23:46:30,967 INFO L226 Difference]: Without dead ends: 19 [2024-10-23 23:46:30,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:46:30,969 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:30,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:46:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-23 23:46:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-23 23:46:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:46:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-10-23 23:46:30,977 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 17 [2024-10-23 23:46:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:30,977 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-10-23 23:46:30,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-23 23:46:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-10-23 23:46:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-23 23:46:30,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:30,979 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:30,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 23:46:31,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:46:31,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:31,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1900653178, now seen corresponding path program 2 times [2024-10-23 23:46:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371339144] [2024-10-23 23:46:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:31,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:46:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:31,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:46:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:31,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:46:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-23 23:46:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:31,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371339144] [2024-10-23 23:46:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371339144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:46:31,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:46:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-23 23:46:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372342657] [2024-10-23 23:46:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:46:31,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 23:46:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 23:46:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:46:31,837 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:31,936 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2024-10-23 23:46:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 23:46:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-10-23 23:46:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:31,938 INFO L225 Difference]: With dead ends: 23 [2024-10-23 23:46:31,938 INFO L226 Difference]: Without dead ends: 21 [2024-10-23 23:46:31,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-23 23:46:31,939 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:31,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:46:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-23 23:46:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-23 23:46:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:46:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-23 23:46:31,945 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 23 [2024-10-23 23:46:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:31,945 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-23 23:46:31,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-23 23:46:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-23 23:46:31,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:31,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:31,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 23:46:31,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:31,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1900654852, now seen corresponding path program 1 times [2024-10-23 23:46:31,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423325222] [2024-10-23 23:46:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:32,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:46:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:32,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:46:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:32,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:46:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-23 23:46:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423325222] [2024-10-23 23:46:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423325222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:46:32,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:46:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-23 23:46:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871326868] [2024-10-23 23:46:32,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:46:32,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 23:46:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 23:46:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:46:32,237 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:32,292 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-10-23 23:46:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 23:46:32,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-10-23 23:46:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:32,296 INFO L225 Difference]: With dead ends: 24 [2024-10-23 23:46:32,296 INFO L226 Difference]: Without dead ends: 21 [2024-10-23 23:46:32,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:46:32,297 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:32,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:46:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-23 23:46:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-23 23:46:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:46:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-23 23:46:32,304 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 23 [2024-10-23 23:46:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:32,305 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-23 23:46:32,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-23 23:46:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-23 23:46:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-23 23:46:32,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:32,306 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:32,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 23:46:32,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:32,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1166569407, now seen corresponding path program 1 times [2024-10-23 23:46:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:32,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871334017] [2024-10-23 23:46:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:33,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:46:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:33,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:46:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:33,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:46:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:46:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871334017] [2024-10-23 23:46:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871334017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:46:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778580673] [2024-10-23 23:46:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:33,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:46:33,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:46:33,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:46:33,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 23:46:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:33,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-10-23 23:46:33,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:46:33,780 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 [2024-10-23 23:46:33,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:46:33,867 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 23 treesize of output 11 [2024-10-23 23:46:33,989 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 11 treesize of output 3 [2024-10-23 23:46:33,997 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 3 [2024-10-23 23:46:34,224 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-10-23 23:46:34,225 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 20 treesize of output 23 [2024-10-23 23:46:34,263 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-23 23:46:34,264 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 15 treesize of output 15 [2024-10-23 23:46:34,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:46:34,422 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 35 treesize of output 23 [2024-10-23 23:46:34,431 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 20 treesize of output 15 [2024-10-23 23:46:34,440 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 [2024-10-23 23:46:34,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-23 23:46:34,516 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 7 treesize of output 3 [2024-10-23 23:46:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:46:34,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:46:34,742 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 208 treesize of output 178 [2024-10-23 23:46:34,750 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 314 treesize of output 254 [2024-10-23 23:46:34,889 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base|)) (.cse11 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_prepend_~head#1.base|))) (let ((.cse4 (select .cse11 |c_ULTIMATE.start_sll_prepend_~head#1.offset|)) (.cse5 (select .cse12 |c_ULTIMATE.start_sll_prepend_~head#1.offset|)) (.cse1 (= |c_ULTIMATE.start_sll_prepend_#t~ret7#1.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse12 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse3 (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse11 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|))) (let ((.cse0 (let ((.cse10 (forall ((v_ArrVal_550 (Array Int Int)) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_550) v_arrayElimCell_11) v_arrayElimCell_12))))) (and (forall ((v_ArrVal_550 (Array Int Int)) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse9 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_550))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse9 .cse4) .cse5)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse9 v_arrayElimCell_11) v_arrayElimCell_12))))) (or .cse1 .cse10) (or .cse3 .cse10)))) (.cse2 (forall ((v_ArrVal_550 (Array Int Int)) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse8 (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_550) v_arrayElimCell_11))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse8 .cse5)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse8 v_arrayElimCell_12))))))) (and (or .cse0 (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_prepend_#t~ret7#1.offset|)) (or .cse1 .cse2) (or .cse0 (= (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (or (not .cse3) (forall ((v_ArrVal_550 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_550) .cse4) .cse5))) (not .cse1)) (forall ((v_ArrVal_550 (Array Int Int)) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse7 (store |c_#memory_int#2| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_550))) (let ((.cse6 (select .cse7 v_arrayElimCell_11))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse6 .cse5)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse7 .cse4) .cse5)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse6 v_arrayElimCell_12)))))) (or .cse3 .cse2))))) is different from false [2024-10-23 23:46:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778580673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:46:35,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:46:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2024-10-23 23:46:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830061491] [2024-10-23 23:46:35,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-23 23:46:35,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-23 23:46:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-23 23:46:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=913, Unknown=1, NotChecked=60, Total=1056 [2024-10-23 23:46:35,421 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 22 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-23 23:46:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:46:35,990 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-10-23 23:46:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-23 23:46:35,991 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 22 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2024-10-23 23:46:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:46:35,991 INFO L225 Difference]: With dead ends: 28 [2024-10-23 23:46:35,991 INFO L226 Difference]: Without dead ends: 26 [2024-10-23 23:46:35,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=118, Invalid=1367, Unknown=1, NotChecked=74, Total=1560 [2024-10-23 23:46:35,993 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:46:35,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 131 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:46:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-23 23:46:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-23 23:46:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:46:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-23 23:46:36,002 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 25 [2024-10-23 23:46:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:46:36,002 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-23 23:46:36,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 22 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-23 23:46:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-23 23:46:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-23 23:46:36,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:46:36,004 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:46:36,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 23:46:36,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-23 23:46:36,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:46:36,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:46:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1166571081, now seen corresponding path program 1 times [2024-10-23 23:46:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:46:36,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074627404] [2024-10-23 23:46:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:46:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:36,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:46:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:36,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:46:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:36,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:46:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:46:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:46:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074627404] [2024-10-23 23:46:36,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074627404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:46:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069255403] [2024-10-23 23:46:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:46:36,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:46:36,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:46:36,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:46:36,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 23:46:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:46:36,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-23 23:46:36,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:46:36,936 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 26 treesize of output 18 [2024-10-23 23:46:36,941 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 [2024-10-23 23:46:36,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-10-23 23:46:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:46:36,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:46:36,977 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 108 treesize of output 78 [2024-10-23 23:46:36,980 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 26 treesize of output 22 [2024-10-23 23:46:36,990 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 25 treesize of output 21 [2024-10-23 23:46:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-23 23:46:37,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069255403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:46:37,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:46:37,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 16 [2024-10-23 23:46:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174027091] [2024-10-23 23:46:37,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:46:37,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-23 23:46:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:46:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-23 23:46:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-10-23 23:46:37,038 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 23:46:41,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:46:45,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:46:49,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:46:53,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:46:57,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:47:01,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:47:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:47:01,267 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-10-23 23:47:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-23 23:47:01,267 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2024-10-23 23:47:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:47:01,268 INFO L225 Difference]: With dead ends: 29 [2024-10-23 23:47:01,268 INFO L226 Difference]: Without dead ends: 26 [2024-10-23 23:47:01,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-10-23 23:47:01,269 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:47:01,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 24.1s Time] [2024-10-23 23:47:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-23 23:47:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-23 23:47:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:47:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-10-23 23:47:01,280 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 25 [2024-10-23 23:47:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:47:01,282 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-10-23 23:47:01,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 23:47:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-10-23 23:47:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 23:47:01,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:47:01,283 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:47:01,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 23:47:01,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:01,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:47:01,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:47:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -86702020, now seen corresponding path program 2 times [2024-10-23 23:47:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:47:01,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758823558] [2024-10-23 23:47:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:47:01,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:47:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:02,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:47:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:02,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:47:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:03,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:47:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:47:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:47:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758823558] [2024-10-23 23:47:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758823558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:47:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763663907] [2024-10-23 23:47:03,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:47:03,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:47:03,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:47:03,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 23:47:03,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:47:03,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:47:03,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-10-23 23:47:03,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:47:03,550 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 [2024-10-23 23:47:03,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:47:03,652 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 23 treesize of output 11 [2024-10-23 23:47:03,856 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-23 23:47:03,856 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 16 treesize of output 15 [2024-10-23 23:47:03,887 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-23 23:47:03,887 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 [2024-10-23 23:47:03,972 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 20 treesize of output 15 [2024-10-23 23:47:03,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:47:03,992 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 [2024-10-23 23:47:04,173 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 45 treesize of output 21 [2024-10-23 23:47:04,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-23 23:47:04,186 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 11 treesize of output 3 [2024-10-23 23:47:04,190 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 7 treesize of output 3 [2024-10-23 23:47:04,391 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-10-23 23:47:04,391 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 20 treesize of output 23 [2024-10-23 23:47:04,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:04,411 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 53 treesize of output 36 [2024-10-23 23:47:04,429 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-10-23 23:47:04,429 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 1 case distinctions, treesize of input 24 treesize of output 31 [2024-10-23 23:47:04,456 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-10-23 23:47:04,457 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 28 treesize of output 30 [2024-10-23 23:47:04,631 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 59 treesize of output 42 [2024-10-23 23:47:04,637 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 74 treesize of output 46 [2024-10-23 23:47:04,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-10-23 23:47:04,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:04,649 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 23 treesize of output 22 [2024-10-23 23:47:04,893 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-23 23:47:04,893 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2024-10-23 23:47:04,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2024-10-23 23:47:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:47:05,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:47:05,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 23:47:05,601 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 294 treesize of output 276 [2024-10-23 23:47:05,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 23:47:05,623 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 266 treesize of output 248 [2024-10-23 23:47:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763663907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:47:05,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:47:05,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 41 [2024-10-23 23:47:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484096264] [2024-10-23 23:47:05,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-23 23:47:05,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-23 23:47:05,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:47:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-23 23:47:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2127, Unknown=0, NotChecked=0, Total=2256 [2024-10-23 23:47:05,795 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 41 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-23 23:47:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:47:06,726 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-10-23 23:47:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 23:47:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 27 [2024-10-23 23:47:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:47:06,727 INFO L225 Difference]: With dead ends: 32 [2024-10-23 23:47:06,727 INFO L226 Difference]: Without dead ends: 30 [2024-10-23 23:47:06,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=219, Invalid=3203, Unknown=0, NotChecked=0, Total=3422 [2024-10-23 23:47:06,739 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:47:06,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 209 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:47:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-23 23:47:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-10-23 23:47:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:47:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-23 23:47:06,749 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 27 [2024-10-23 23:47:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:47:06,749 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-23 23:47:06,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-23 23:47:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-23 23:47:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 23:47:06,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:47:06,750 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:47:06,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 23:47:06,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:06,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:47:06,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:47:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -86703694, now seen corresponding path program 2 times [2024-10-23 23:47:06,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:47:06,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568082212] [2024-10-23 23:47:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:47:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:47:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:07,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:47:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:07,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:47:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:07,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:47:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:47:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:47:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568082212] [2024-10-23 23:47:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568082212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:47:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057000499] [2024-10-23 23:47:08,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:47:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:08,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:47:08,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:47:08,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 23:47:08,244 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:47:08,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:47:08,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-10-23 23:47:08,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:47:08,329 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 [2024-10-23 23:47:08,371 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 [2024-10-23 23:47:08,443 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 3 [2024-10-23 23:47:08,445 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 12 treesize of output 4 [2024-10-23 23:47:08,593 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-10-23 23:47:08,593 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 21 treesize of output 24 [2024-10-23 23:47:08,609 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-23 23:47:08,610 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 15 treesize of output 15 [2024-10-23 23:47:08,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:47:08,686 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 28 treesize of output 27 [2024-10-23 23:47:08,691 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 32 treesize of output 20 [2024-10-23 23:47:08,736 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 7 treesize of output 3 [2024-10-23 23:47:08,836 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-23 23:47:08,836 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 32 treesize of output 15 [2024-10-23 23:47:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:47:08,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:47:08,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 206 [2024-10-23 23:47:09,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 23:47:09,116 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 176 treesize of output 159 [2024-10-23 23:47:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057000499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:47:09,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:47:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 33 [2024-10-23 23:47:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926962917] [2024-10-23 23:47:09,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-23 23:47:09,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-23 23:47:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:47:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-23 23:47:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-10-23 23:47:09,352 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 33 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 25 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-23 23:47:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:47:09,896 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-10-23 23:47:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-23 23:47:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 25 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 27 [2024-10-23 23:47:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:47:09,898 INFO L225 Difference]: With dead ends: 32 [2024-10-23 23:47:09,898 INFO L226 Difference]: Without dead ends: 29 [2024-10-23 23:47:09,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2024-10-23 23:47:09,900 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:47:09,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 253 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:47:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-23 23:47:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-10-23 23:47:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-23 23:47:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-23 23:47:09,907 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 27 [2024-10-23 23:47:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:47:09,907 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-23 23:47:09,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 25 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-23 23:47:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-23 23:47:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-23 23:47:09,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:47:09,908 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:47:09,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 23:47:10,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:10,110 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:47:10,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:47:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1716228745, now seen corresponding path program 3 times [2024-10-23 23:47:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:47:10,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515907020] [2024-10-23 23:47:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:47:10,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:47:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:11,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:47:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:11,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:47:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:11,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-23 23:47:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:47:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:47:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:47:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515907020] [2024-10-23 23:47:11,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515907020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:47:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355666719] [2024-10-23 23:47:11,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:47:11,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:47:11,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:47:11,778 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:47:11,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 23:47:12,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-23 23:47:12,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:47:12,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-10-23 23:47:12,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:47:12,124 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 [2024-10-23 23:47:12,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:47:12,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 23:47:16,273 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= |c_#valid| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0)))))) (or (exists ((|v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |c_#memory_$Pointer$#2.offset|))) (and (= 0 (select (select |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4)) (= |c_#memory_$Pointer$#2.offset| (store |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse1 (select |c_#memory_$Pointer$#2.offset| .cse1))) (= .cse1 |c_ULTIMATE.start_sll_create_#t~ret4#1.base|)))) (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0)) (or (= (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (exists ((|v_#memory_$Pointer$#2.base_BEFORE_CALL_6| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| |c_#memory_$Pointer$#2.base|))) (and (= (store |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| .cse2 (select |c_#memory_$Pointer$#2.base| .cse2)) |c_#memory_$Pointer$#2.base|) (= .cse2 |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) (= (select (select |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0))))) (= |c_ULTIMATE.start_sll_create_#t~ret4#1.offset| 0) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) 1)) is different from false [2024-10-23 23:47:16,276 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= |c_#valid| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0)))))) (or (exists ((|v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |c_#memory_$Pointer$#2.offset|))) (and (= 0 (select (select |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4)) (= |c_#memory_$Pointer$#2.offset| (store |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse1 (select |c_#memory_$Pointer$#2.offset| .cse1))) (= .cse1 |c_ULTIMATE.start_sll_create_#t~ret4#1.base|)))) (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0)) (or (= (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (exists ((|v_#memory_$Pointer$#2.base_BEFORE_CALL_6| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| |c_#memory_$Pointer$#2.base|))) (and (= (store |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| .cse2 (select |c_#memory_$Pointer$#2.base| .cse2)) |c_#memory_$Pointer$#2.base|) (= .cse2 |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) (= (select (select |v_#memory_$Pointer$#2.base_BEFORE_CALL_6| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0))))) (= |c_ULTIMATE.start_sll_create_#t~ret4#1.offset| 0) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_#t~ret4#1.base|) 1)) is different from true [2024-10-23 23:47:16,337 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-10-23 23:47:16,337 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 23 treesize of output 22 [2024-10-23 23:47:16,354 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-10-23 23:47:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-10-23 23:47:16,373 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) (= |c_#valid| (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1)))))) (or (and (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0)) (exists ((|v_#memory_$Pointer$#2.offset_78| (Array Int (Array Int Int)))) (and (exists ((|v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |v_#memory_$Pointer$#2.offset_78|))) (and (= (select (select |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse0) 4) 0) (= .cse2 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= |v_#memory_$Pointer$#2.offset_78| (store |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse2 (select |v_#memory_$Pointer$#2.offset_78| .cse2)))))) (= |c_#memory_$Pointer$#2.offset| (store |v_#memory_$Pointer$#2.offset_78| |c_ULTIMATE.start_sll_create_~head~0#1.base| (store (select |v_#memory_$Pointer$#2.offset_78| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4 0)))))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (or (= .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0)) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0))) is different from false [2024-10-23 23:47:16,375 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) (= |c_#valid| (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1)))))) (or (and (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0)) (exists ((|v_#memory_$Pointer$#2.offset_78| (Array Int (Array Int Int)))) (and (exists ((|v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| |v_#memory_$Pointer$#2.offset_78|))) (and (= (select (select |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse0) 4) 0) (= .cse2 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= |v_#memory_$Pointer$#2.offset_78| (store |v_#memory_$Pointer$#2.offset_BEFORE_CALL_4| .cse2 (select |v_#memory_$Pointer$#2.offset_78| .cse2)))))) (= |c_#memory_$Pointer$#2.offset| (store |v_#memory_$Pointer$#2.offset_78| |c_ULTIMATE.start_sll_create_~head~0#1.base| (store (select |v_#memory_$Pointer$#2.offset_78| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4 0)))))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (or (= .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0)) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0))) is different from true [2024-10-23 23:47:16,420 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) (= |c_#valid| (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1)))))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (or (= .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0)) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0))) is different from false [2024-10-23 23:47:16,421 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 0) (= |c_#valid| (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1)))))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (or (= .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0)) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0))) is different from true [2024-10-23 23:47:16,456 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= |c_ULTIMATE.start_sll_prepend_~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 0) (= (select |v_#valid_BEFORE_CALL_10| .cse1) 1) (= |c_#valid| (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse2 (select |c_#valid| .cse2)))))) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (or (= .cse1 .cse0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0)) (= |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|) (= (select |c_#valid| .cse0) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from false [2024-10-23 23:47:16,458 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= |c_ULTIMATE.start_sll_prepend_~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (and (= (select |v_#valid_BEFORE_CALL_10| .cse0) 0) (= (select |v_#valid_BEFORE_CALL_10| .cse1) 1) (= |c_#valid| (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (store |v_#valid_BEFORE_CALL_10| .cse2 (select |c_#valid| .cse2)))))) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (or (= .cse1 .cse0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0)) (= |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|) (= (select |c_#valid| .cse0) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from true [2024-10-23 23:47:16,479 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-23 23:47:16,479 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 60 treesize of output 27 [2024-10-23 23:47:16,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:16,486 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 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-23 23:47:16,506 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (= |c_#memory_$Pointer$#2.offset| |c_old(#memory_$Pointer$#2.offset)|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (v_arrayElimIndex_3 Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_old(#memory_$Pointer$#2.base)| |c_#memory_$Pointer$#2.base|)) is different from false [2024-10-23 23:47:16,507 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (= |c_#memory_$Pointer$#2.offset| |c_old(#memory_$Pointer$#2.offset)|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (v_arrayElimIndex_3 Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_old(#memory_$Pointer$#2.base)| |c_#memory_$Pointer$#2.base|)) is different from true [2024-10-23 23:47:16,531 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_node_create_~temp~0#1.offset| 0) (= |c_#memory_$Pointer$#2.offset| |c_old(#memory_$Pointer$#2.offset)|) (= (select |c_old(#valid)| |c_node_create_~temp~0#1.base|) 0) (= |c_old(#memory_$Pointer$#2.base)| |c_#memory_$Pointer$#2.base|)) is different from false [2024-10-23 23:47:16,533 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_node_create_~temp~0#1.offset| 0) (= |c_#memory_$Pointer$#2.offset| |c_old(#memory_$Pointer$#2.offset)|) (= (select |c_old(#valid)| |c_node_create_~temp~0#1.base|) 0) (= |c_old(#memory_$Pointer$#2.base)| |c_#memory_$Pointer$#2.base|)) is different from true [2024-10-23 23:47:16,571 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_node_create_#res#1.offset| 0) (= (select |c_old(#valid)| |c_node_create_#res#1.base|) 0) (= (store |c_old(#memory_$Pointer$#2.offset)| |c_node_create_#res#1.base| (select |c_#memory_$Pointer$#2.offset| |c_node_create_#res#1.base|)) |c_#memory_$Pointer$#2.offset|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= (store |c_old(#memory_$Pointer$#2.base)| |c_node_create_#res#1.base| (select |c_#memory_$Pointer$#2.base| |c_node_create_#res#1.base|)) |c_#memory_$Pointer$#2.base|)) is different from false [2024-10-23 23:47:16,573 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_node_create_#res#1.offset| 0) (= (select |c_old(#valid)| |c_node_create_#res#1.base|) 0) (= (store |c_old(#memory_$Pointer$#2.offset)| |c_node_create_#res#1.base| (select |c_#memory_$Pointer$#2.offset| |c_node_create_#res#1.base|)) |c_#memory_$Pointer$#2.offset|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= (store |c_old(#memory_$Pointer$#2.base)| |c_node_create_#res#1.base| (select |c_#memory_$Pointer$#2.base| |c_node_create_#res#1.base|)) |c_#memory_$Pointer$#2.base|)) is different from true [2024-10-23 23:47:16,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:16,627 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-10-23 23:47:16,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2024-10-23 23:47:16,688 INFO L349 Elim1Store]: treesize reduction 48, result has 56.8 percent of original size [2024-10-23 23:47:16,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 73 [2024-10-23 23:47:16,755 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| .cse3) 4))) (and (= |c_ULTIMATE.start_sll_prepend_~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_ULTIMATE.start_sll_prepend_#t~ret7#1.offset| 0) (or (= .cse2 .cse3) (= (select (select |c_#memory_$Pointer$#2.base| .cse2) 4) 0)) (let ((.cse8 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse7 (select |c_#memory_$Pointer$#2.offset| .cse2))) (let ((.cse5 (= (select .cse7 4) 0)) (.cse4 (= .cse2 |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (.cse6 (= (select .cse8 4) 0))) (or (and (or .cse4 .cse5) (= .cse3 |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (and .cse6 .cse5) (and (or .cse4 (= .cse7 .cse8)) .cse6)))) (= |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (select |v_old(#valid)_AFTER_CALL_17| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse2) 1) (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse9 (select |v_old(#valid)_AFTER_CALL_17| .cse9))) |v_old(#valid)_AFTER_CALL_17|) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0))) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from false [2024-10-23 23:47:16,758 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| .cse3) 4))) (and (= |c_ULTIMATE.start_sll_prepend_~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int)) (v_arrayElimIndex_3 Int) (|v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6| Int) (|v_#valid_BEFORE_CALL_11| (Array Int Int)) (|v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|))) (and (= |v_#valid_BEFORE_CALL_11| (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_#valid_BEFORE_CALL_11|))) (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_#valid_BEFORE_CALL_11| .cse0)))) (= 0 (select |v_#valid_BEFORE_CALL_10| .cse1)) (= (select |v_#valid_BEFORE_CALL_10| v_arrayElimIndex_3) 1) (= (select |v_#valid_BEFORE_CALL_11| .cse1) 1) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_prepend_~head#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_sll_prepend_~head#1.offset_BEFORE_CALL_6|) 0)))) (= |c_ULTIMATE.start_sll_prepend_#t~ret7#1.offset| 0) (or (= .cse2 .cse3) (= (select (select |c_#memory_$Pointer$#2.base| .cse2) 4) 0)) (let ((.cse8 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse7 (select |c_#memory_$Pointer$#2.offset| .cse2))) (let ((.cse5 (= (select .cse7 4) 0)) (.cse4 (= .cse2 |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (.cse6 (= (select .cse8 4) 0))) (or (and (or .cse4 .cse5) (= .cse3 |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (and .cse6 .cse5) (and (or .cse4 (= .cse7 .cse8)) .cse6)))) (= |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (select |v_old(#valid)_AFTER_CALL_17| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse2) 1) (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse9 (select |v_old(#valid)_AFTER_CALL_17| .cse9))) |v_old(#valid)_AFTER_CALL_17|) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0))) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from true [2024-10-23 23:47:16,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 23:47:16,837 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 202 treesize of output 142 [2024-10-23 23:47:16,850 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-23 23:47:16,850 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 15 treesize of output 7 [2024-10-23 23:47:16,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:16,871 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-10-23 23:47:16,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 104 [2024-10-23 23:47:16,922 INFO L349 Elim1Store]: treesize reduction 62, result has 56.0 percent of original size [2024-10-23 23:47:16,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 145 [2024-10-23 23:47:16,933 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 8 treesize of output 7 [2024-10-23 23:47:17,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:17,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-23 23:47:17,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:47:17,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-23 23:47:17,027 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~ptr~0#1.base|) 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| .cse1) 4))) (let ((.cse2 (select |c_#memory_$Pointer$#2.offset| .cse0))) (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (or (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0) (= .cse1 .cse0)) (= (select .cse2 4) 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse1) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |c_ULTIMATE.start_main_~ptr~0#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 1) (= (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse3 (select |v_old(#valid)_AFTER_CALL_17| .cse3))) |v_old(#valid)_AFTER_CALL_17|))) (let ((.cse4 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~ptr~0#1.base|))) (or (= .cse4 (store .cse2 4 0)) (= (select .cse4 4) 0))) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0))))) is different from false [2024-10-23 23:47:17,029 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~ptr~0#1.base|) 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| .cse1) 4))) (let ((.cse2 (select |c_#memory_$Pointer$#2.offset| .cse0))) (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (or (= (select (select |c_#memory_$Pointer$#2.base| .cse0) 4) 0) (= .cse1 .cse0)) (= (select .cse2 4) 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse1) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |c_ULTIMATE.start_main_~ptr~0#1.base|) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 1) (= (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse3 (select |v_old(#valid)_AFTER_CALL_17| .cse3))) |v_old(#valid)_AFTER_CALL_17|))) (let ((.cse4 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~ptr~0#1.base|))) (or (= .cse4 (store .cse2 4 0)) (= (select .cse4 4) 0))) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0))))) is different from true [2024-10-23 23:47:17,157 WARN L851 $PredicateComparison]: unable to prove that (or (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse0 (select |v_old(#valid)_AFTER_CALL_17| .cse0))) |v_old(#valid)_AFTER_CALL_17|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| .cse1) 4))) (let ((.cse4 (select |c_#memory_$Pointer$#2.offset| .cse2)) (.cse3 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse1) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse2) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse2) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| .cse1) (= |c_ULTIMATE.start_main_~temp~2#1.offset| (select .cse3 4)) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (= (select .cse4 4) 0) (= (store .cse4 4 0) .cse3)))))))) (and (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse5) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse5) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse6) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse6) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| .cse5) (= (select |v_#valid_BEFORE_CALL_13| .cse5) 0) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse5) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse6) 4) 0))))) (= |c_ULTIMATE.start_main_~temp~2#1.offset| 0))) is different from false [2024-10-23 23:47:17,159 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (= (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse0 (select |v_old(#valid)_AFTER_CALL_17| .cse0))) |v_old(#valid)_AFTER_CALL_17|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| .cse1) 4))) (let ((.cse4 (select |c_#memory_$Pointer$#2.offset| .cse2)) (.cse3 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse1) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse2) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse2) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| .cse1) (= |c_ULTIMATE.start_main_~temp~2#1.offset| (select .cse3 4)) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (= (select .cse4 4) 0) (= (store .cse4 4 0) .cse3)))))))) (and (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse5) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse5) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse6) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse6) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| .cse5) (= (select |v_#valid_BEFORE_CALL_13| .cse5) 0) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse5) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse6) 4) 0))))) (= |c_ULTIMATE.start_main_~temp~2#1.offset| 0))) is different from true [2024-10-23 23:47:17,230 WARN L851 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| .cse0) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0)))))) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| .cse3) 4))) (let ((.cse6 (select |c_#memory_$Pointer$#2.offset| .cse5)) (.cse4 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.offset| (select .cse4 4)) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse5) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse5) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| .cse3) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse3) 4) 0) (= (select .cse6 4) 0) (= (store .cse6 4 0) .cse4)))))) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|)))) is different from false [2024-10-23 23:47:17,232 WARN L873 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| .cse0) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0)))))) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int))) (and (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| .cse3) 4))) (let ((.cse6 (select |c_#memory_$Pointer$#2.offset| .cse5)) (.cse4 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.offset| (select .cse4 4)) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse5) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse5) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| .cse3) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse3) 4) 0) (= (select .cse6 4) 0) (= (store .cse6 4 0) .cse4)))))) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|)))) is different from true [2024-10-23 23:47:17,310 WARN L851 $PredicateComparison]: unable to prove that (or (and (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= .cse1 |c_ULTIMATE.start_main_~temp~2#1.base|) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0))))) (= |c_ULTIMATE.start_main_~temp~2#1.offset| 0)) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse3))) (let ((.cse10 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|)) (.cse4 (select .cse5 4))) (let ((.cse9 (select |c_#memory_$Pointer$#2.offset| .cse4)) (.cse8 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse6 (+ (select .cse10 4) 4))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse4) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse4) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| (select .cse5 .cse6)) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|) (= (select .cse8 4) 0) (= (select .cse9 4) 0) (= (store .cse9 4 0) .cse10) (= |c_ULTIMATE.start_main_~temp~2#1.offset| (select .cse8 .cse6))))))))) is different from false [2024-10-23 23:47:17,312 WARN L873 $PredicateComparison]: unable to prove that (or (and (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= .cse1 |c_ULTIMATE.start_main_~temp~2#1.base|) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0))))) (= |c_ULTIMATE.start_main_~temp~2#1.offset| 0)) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse3))) (let ((.cse10 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|)) (.cse4 (select .cse5 4))) (let ((.cse9 (select |c_#memory_$Pointer$#2.offset| .cse4)) (.cse8 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse6 (+ (select .cse10 4) 4))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse4) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse4) 1) (= |c_ULTIMATE.start_main_~temp~2#1.base| (select .cse5 .cse6)) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse7 (select |v_old(#valid)_AFTER_CALL_17| .cse7))) |v_old(#valid)_AFTER_CALL_17|) (= (select .cse8 4) 0) (= (select .cse9 4) 0) (= (store .cse9 4 0) .cse10) (= |c_ULTIMATE.start_main_~temp~2#1.offset| (select .cse8 .cse6))))))))) is different from true [2024-10-23 23:47:17,393 WARN L851 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (= .cse1 |c_ULTIMATE.start_main_~ptr~0#1.base|)))))) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse3))) (let ((.cse4 (select .cse5 4)) (.cse10 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (let ((.cse6 (+ (select .cse10 4) 4)) (.cse7 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse9 (select |c_#memory_$Pointer$#2.offset| .cse4))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse4) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse4) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| (select .cse5 .cse6)) (= |c_ULTIMATE.start_main_~ptr~0#1.offset| (select .cse7 .cse6)) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse8 (select |v_old(#valid)_AFTER_CALL_17| .cse8))) |v_old(#valid)_AFTER_CALL_17|) (= (select .cse7 4) 0) (= (select .cse9 4) 0) (= (store .cse9 4 0) .cse10)))))))) is different from false [2024-10-23 23:47:17,396 WARN L873 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start_main_~ptr~0#1.offset| 0) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| .cse0) 4))) (and (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4) 0) (= (select |v_old(#valid)_AFTER_CALL_17| .cse0) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse1) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse1) 1) (= (select |v_#valid_BEFORE_CALL_13| .cse0) 0) (= (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse2 (select |v_old(#valid)_AFTER_CALL_17| .cse2))) |v_old(#valid)_AFTER_CALL_17|) (= (select (select |c_#memory_$Pointer$#2.offset| .cse0) 4) 0) (= (select (select |c_#memory_$Pointer$#2.offset| .cse1) 4) 0) (= .cse1 |c_ULTIMATE.start_main_~ptr~0#1.base|)))))) (exists ((|v_#valid_BEFORE_CALL_13| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_17| (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.base_34| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 4))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse3))) (let ((.cse4 (select .cse5 4)) (.cse10 (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_34|))) (let ((.cse6 (+ (select .cse10 4) 4)) (.cse7 (select |c_#memory_$Pointer$#2.offset| .cse3)) (.cse9 (select |c_#memory_$Pointer$#2.offset| .cse4))) (and (= (select |v_old(#valid)_AFTER_CALL_17| .cse3) 1) (= (select |v_old(#valid)_AFTER_CALL_17| |v_ULTIMATE.start_main_~ptr~0#1.base_34|) 0) (= (select (select |c_#memory_$Pointer$#2.base| .cse4) 4) 0) (= (select |v_#valid_BEFORE_CALL_13| .cse4) 1) (= |c_ULTIMATE.start_main_~ptr~0#1.base| (select .cse5 .cse6)) (= |c_ULTIMATE.start_main_~ptr~0#1.offset| (select .cse7 .cse6)) (= (select |v_#valid_BEFORE_CALL_13| .cse3) 0) (= (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_13| |v_old(#valid)_AFTER_CALL_17|))) (store |v_#valid_BEFORE_CALL_13| .cse8 (select |v_old(#valid)_AFTER_CALL_17| .cse8))) |v_old(#valid)_AFTER_CALL_17|) (= (select .cse7 4) 0) (= (select .cse9 4) 0) (= (store .cse9 4 0) .cse10)))))))) is different from true [2024-10-23 23:47:17,679 INFO L349 Elim1Store]: treesize reduction 160, result has 46.8 percent of original size [2024-10-23 23:47:17,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 264 treesize of output 296 [2024-10-23 23:47:17,861 INFO L349 Elim1Store]: treesize reduction 56, result has 66.9 percent of original size [2024-10-23 23:47:17,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 162 treesize of output 252