./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/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 ../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.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.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:15:00,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:15:00,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:15:00,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:15:00,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:15:00,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:15:00,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:15:00,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:15:00,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:15:00,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:15:00,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:15:00,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:15:00,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:15:00,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:15:00,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:15:00,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:15:00,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:15:00,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:15:00,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:15:00,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:15:00,488 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:15:00,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:15:00,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:15:00,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:15:00,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:15:00,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:15:00,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:15:00,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:15:00,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:15:00,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:15:00,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:15:00,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:15:00,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:15:00,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:15:00,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:15:00,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:15:00,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:15:00,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:15:00,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:15:00,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:15:00,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:15:00,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:15:00,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:15:00,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:15:00,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:15:00,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:15:00,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:15:00,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:15:00,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:15:00,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:15:00,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:15:00,546 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:15:00,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:15:00,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:15:00,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:15:00,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:15:00,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:15:00,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:15:00,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:15:00,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:15:00,558 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:15:00,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:15:00,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:15:00,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:15:00,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:15:00,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:15:00,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:15:00,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:15:00,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:15:00,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:15:00,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:15:00,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:15:00,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:15:00,561 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:15:00,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:15:00,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:15:00,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2022-07-21 02:15:00,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:15:00,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:15:00,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:15:00,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:15:00,887 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:15:00,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2022-07-21 02:15:00,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a5c8ca3/8d197210bbf34f14aea7d3d2812c79d9/FLAGa1afe428c [2022-07-21 02:15:01,432 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:15:01,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2022-07-21 02:15:01,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a5c8ca3/8d197210bbf34f14aea7d3d2812c79d9/FLAGa1afe428c [2022-07-21 02:15:01,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a5c8ca3/8d197210bbf34f14aea7d3d2812c79d9 [2022-07-21 02:15:01,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:15:01,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:15:01,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:15:01,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:15:01,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:15:01,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:15:01" (1/1) ... [2022-07-21 02:15:01,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd9d137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:01, skipping insertion in model container [2022-07-21 02:15:01,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:15:01" (1/1) ... [2022-07-21 02:15:01,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:15:01,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:15:02,103 WARN L230 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/dll2n_prepend_unequal.i[24450,24463] [2022-07-21 02:15:02,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:15:02,113 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:15:02,148 WARN L230 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/dll2n_prepend_unequal.i[24450,24463] [2022-07-21 02:15:02,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:15:02,180 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:15:02,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02 WrapperNode [2022-07-21 02:15:02,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:15:02,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:15:02,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:15:02,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:15:02,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,243 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2022-07-21 02:15:02,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:15:02,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:15:02,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:15:02,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:15:02,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:15:02,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:15:02,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:15:02,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:15:02,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (1/1) ... [2022-07-21 02:15:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:15:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:15:02,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:15:02,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:15:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-07-21 02:15:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-07-21 02:15:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 02:15:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:15:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:15:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:15:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:15:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:15:02,450 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:15:02,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:15:02,489 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-07-21 02:15:02,741 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:15:02,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:15:02,747 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 02:15:02,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:15:02 BoogieIcfgContainer [2022-07-21 02:15:02,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:15:02,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:15:02,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:15:02,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:15:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:15:01" (1/3) ... [2022-07-21 02:15:02,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7be994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:15:02, skipping insertion in model container [2022-07-21 02:15:02,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:15:02" (2/3) ... [2022-07-21 02:15:02,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7be994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:15:02, skipping insertion in model container [2022-07-21 02:15:02,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:15:02" (3/3) ... [2022-07-21 02:15:02,756 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2022-07-21 02:15:02,767 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:15:02,768 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:15:02,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:15:02,833 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38a11f5c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@761468da [2022-07-21 02:15:02,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:15:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:15:02,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:02,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:02,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -670387442, now seen corresponding path program 1 times [2022-07-21 02:15:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:02,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925944081] [2022-07-21 02:15:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925944081] [2022-07-21 02:15:03,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925944081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:15:03,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:15:03,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:15:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372351222] [2022-07-21 02:15:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:15:03,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:15:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:15:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:15:03,075 INFO L87 Difference]: Start difference. First operand has 30 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:03,094 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2022-07-21 02:15:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:15:03,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 02:15:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:03,101 INFO L225 Difference]: With dead ends: 52 [2022-07-21 02:15:03,101 INFO L226 Difference]: Without dead ends: 21 [2022-07-21 02:15:03,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:15:03,107 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:15:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-21 02:15:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-21 02:15:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-07-21 02:15:03,145 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-07-21 02:15:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:03,146 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-07-21 02:15:03,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-07-21 02:15:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:15:03,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:03,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:15:03,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash -888049989, now seen corresponding path program 1 times [2022-07-21 02:15:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790836918] [2022-07-21 02:15:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:03,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:03,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790836918] [2022-07-21 02:15:03,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790836918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:15:03,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:15:03,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:15:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137955715] [2022-07-21 02:15:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:15:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:15:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:15:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:15:03,253 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:03,269 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-07-21 02:15:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:15:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 02:15:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:03,271 INFO L225 Difference]: With dead ends: 40 [2022-07-21 02:15:03,271 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 02:15:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:15:03,276 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:03,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:15:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 02:15:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2022-07-21 02:15:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-07-21 02:15:03,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2022-07-21 02:15:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:03,290 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-07-21 02:15:03,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-07-21 02:15:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 02:15:03,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:03,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:03,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:15:03,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash -116753941, now seen corresponding path program 1 times [2022-07-21 02:15:03,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975885581] [2022-07-21 02:15:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:03,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975885581] [2022-07-21 02:15:03,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975885581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:15:03,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:15:03,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:15:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059571467] [2022-07-21 02:15:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:15:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:15:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:15:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:15:03,382 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:03,398 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-07-21 02:15:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:15:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 02:15:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:03,399 INFO L225 Difference]: With dead ends: 45 [2022-07-21 02:15:03,400 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 02:15:03,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:15:03,401 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:03,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:15:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 02:15:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-21 02:15:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-07-21 02:15:03,405 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2022-07-21 02:15:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:03,406 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-07-21 02:15:03,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-07-21 02:15:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 02:15:03,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:03,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 02:15:03,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash -703559955, now seen corresponding path program 1 times [2022-07-21 02:15:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:03,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338123606] [2022-07-21 02:15:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338123606] [2022-07-21 02:15:03,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338123606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:15:03,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584609395] [2022-07-21 02:15:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:15:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:15:03,515 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) [2022-07-21 02:15:03,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:15:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:03,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 02:15:03,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:15:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:15:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:03,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584609395] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:15:03,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:15:03,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-21 02:15:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564132069] [2022-07-21 02:15:03,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:15:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:15:03,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:15:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:15:03,698 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:03,712 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-07-21 02:15:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:15:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 02:15:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:03,714 INFO L225 Difference]: With dead ends: 41 [2022-07-21 02:15:03,714 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 02:15:03,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:15:03,715 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:03,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:15:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 02:15:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 02:15:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-21 02:15:03,720 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 18 [2022-07-21 02:15:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-21 02:15:03,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-21 02:15:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 02:15:03,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:03,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:03,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:15:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:15:03,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1057796345, now seen corresponding path program 1 times [2022-07-21 02:15:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:03,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115452532] [2022-07-21 02:15:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:15:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115452532] [2022-07-21 02:15:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115452532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:15:04,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:15:04,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 02:15:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255602159] [2022-07-21 02:15:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:15:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 02:15:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 02:15:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-21 02:15:04,412 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:04,766 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-21 02:15:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 02:15:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-21 02:15:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:04,769 INFO L225 Difference]: With dead ends: 30 [2022-07-21 02:15:04,769 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 02:15:04,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-07-21 02:15:04,770 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:04,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 46 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:15:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 02:15:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-07-21 02:15:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-07-21 02:15:04,774 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-07-21 02:15:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:04,775 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-07-21 02:15:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-07-21 02:15:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 02:15:04,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:04,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 02:15:04,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928246, now seen corresponding path program 1 times [2022-07-21 02:15:04,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:04,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838903883] [2022-07-21 02:15:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:15:05,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:05,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838903883] [2022-07-21 02:15:05,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838903883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:15:05,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:15:05,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 02:15:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020653610] [2022-07-21 02:15:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:15:05,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 02:15:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:15:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 02:15:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:15:05,104 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:15:05,614 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2022-07-21 02:15:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 02:15:05,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-21 02:15:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:15:05,616 INFO L225 Difference]: With dead ends: 51 [2022-07-21 02:15:05,616 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 02:15:05,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-21 02:15:05,617 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 02:15:05,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 54 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 02:15:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 02:15:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-21 02:15:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-07-21 02:15:05,623 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2022-07-21 02:15:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:15:05,623 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-07-21 02:15:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:15:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-07-21 02:15:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 02:15:05,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:15:05,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:15:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 02:15:05,624 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:15:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:15:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1364926572, now seen corresponding path program 1 times [2022-07-21 02:15:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:15:05,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299672277] [2022-07-21 02:15:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:15:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:06,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:15:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299672277] [2022-07-21 02:15:06,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299672277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:15:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633042366] [2022-07-21 02:15:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:15:06,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:15:06,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:15:06,134 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) [2022-07-21 02:15:06,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:15:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:15:06,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 98 conjunts are in the unsatisfiable core [2022-07-21 02:15:06,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:15:06,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:15:06,384 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 02:15:06,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 02:15:06,525 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-21 02:15:06,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 33 [2022-07-21 02:15:06,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:06,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:06,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-21 02:15:06,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-07-21 02:15:06,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:06,926 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-21 02:15:06,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-07-21 02:15:07,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-07-21 02:15:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 32 [2022-07-21 02:15:07,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-07-21 02:15:07,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-07-21 02:15:07,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-07-21 02:15:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-07-21 02:15:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,237 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-07-21 02:15:07,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 86 [2022-07-21 02:15:07,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:15:07,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-07-21 02:15:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2022-07-21 02:15:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-07-21 02:15:07,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 39 [2022-07-21 02:15:07,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 30 [2022-07-21 02:15:07,457 INFO L356 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-07-21 02:15:07,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 122 treesize of output 53 [2022-07-21 02:15:07,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:15:07,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 12 [2022-07-21 02:15:07,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-07-21 02:15:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:15:07,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:15:07,652 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_566) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) is different from false [2022-07-21 02:15:07,690 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_562 Int) (v_ArrVal_561 (Array Int Int)) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_566 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_564))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_561))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ 4 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) 8) v_ArrVal_562)) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_566) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))))) is different from false [2022-07-21 02:15:07,825 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_556 (Array Int Int)) (v_ArrVal_562 Int) (v_ArrVal_561 (Array Int Int)) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_566 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse10 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| 4))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse1 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse6 (let ((.cse9 (store .cse2 .cse1 v_ArrVal_564))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (.cse3 (let ((.cse7 (store .cse8 .cse1 v_ArrVal_561))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_556))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ 8 (select (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) v_ArrVal_562))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_566) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))))))) is different from false [2022-07-21 02:15:07,941 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_556 (Array Int Int)) (v_ArrVal_562 Int) (v_ArrVal_561 (Array Int Int)) (v_ArrVal_553 (Array Int Int)) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_552 (Array Int Int)) (v_ArrVal_566 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse10 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| 4))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_552 .cse10 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_552) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_553 .cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse1 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse6 (let ((.cse9 (store .cse2 .cse1 v_ArrVal_564))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (.cse3 (let ((.cse7 (store .cse8 .cse1 v_ArrVal_561))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_556))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ 8 (select (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) v_ArrVal_562))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_566) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))))))) is different from false [2022-07-21 02:15:08,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31382 treesize of output 29732 [2022-07-21 02:15:08,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1971414 treesize of output 1912500 [2022-07-21 02:15:10,999 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:15:11,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2136836 treesize of output 2017656 [2022-07-21 02:15:15,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2259960 treesize of output 2135592 [2022-07-21 02:15:18,319 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:15:18,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2409646 treesize of output 2299542 [2022-07-21 02:15:24,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2694056 treesize of output 2617256 [2022-07-21 02:15:28,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3265224 treesize of output 3188200 [2022-07-21 02:15:33,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3741128 treesize of output 3620168 [2022-07-21 02:15:38,763 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 4154 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-21 02:16:16,409 WARN L233 SmtUtils]: Spent 31.41s on a formula simplification. DAG size of input: 4142 DAG size of output: 4142 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-21 02:16:35,132 WARN L233 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 1439 DAG size of output: 1439 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-21 02:16:44,391 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 1437 DAG size of output: 1437 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)