./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/array-patterns/array7_pattern.c -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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:04:46,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:04:46,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:04:46,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:04:46,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:04:46,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:04:46,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:04:46,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:04:46,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:04:46,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:04:46,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:04:46,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:04:46,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:04:46,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:04:46,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:04:46,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:04:46,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:04:46,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:04:46,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:04:46,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:04:46,599 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:04:46,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:04:46,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:04:46,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:04:46,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:04:46,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:04:46,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:04:46,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:04:46,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:04:46,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:04:46,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:04:46,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:04:46,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:04:46,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:04:46,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:04:46,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:04:46,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:04:46,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:04:46,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:04:46,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:04:46,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:04:46,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:04:46,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:04:46,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:04:46,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:04:46,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:04:46,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:04:46,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:04:46,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:04:46,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:04:46,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:04:46,645 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:04:46,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:04:46,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:04:46,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:04:46,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:04:46,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:04:46,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:04:46,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:04:46,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:04:46,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:04:46,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:04:46,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:04:46,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:04:46,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:04:46,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:04:46,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:04:46,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:04:46,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:04:46,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:04:46,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:04:46,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:04:46,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:04:46,650 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:04:46,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:04:46,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:04:46,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2022-07-11 23:04:46,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:04:46,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:04:46,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:04:46,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:04:46,846 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:04:46,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-11 23:04:46,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e8d007d/3d2536df15d345a689d00eb2d5615ab2/FLAG47ff47987 [2022-07-11 23:04:47,276 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:04:47,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-11 23:04:47,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e8d007d/3d2536df15d345a689d00eb2d5615ab2/FLAG47ff47987 [2022-07-11 23:04:47,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e8d007d/3d2536df15d345a689d00eb2d5615ab2 [2022-07-11 23:04:47,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:04:47,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:04:47,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:04:47,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:04:47,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:04:47,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaaaa4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47, skipping insertion in model container [2022-07-11 23:04:47,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:04:47,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:04:47,418 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-11 23:04:47,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:04:47,474 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:04:47,484 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-11 23:04:47,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:04:47,516 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:04:47,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47 WrapperNode [2022-07-11 23:04:47,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:04:47,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:04:47,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:04:47,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:04:47,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,554 INFO L137 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-07-11 23:04:47,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:04:47,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:04:47,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:04:47,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:04:47,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:04:47,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:04:47,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:04:47,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:04:47,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (1/1) ... [2022-07-11 23:04:47,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:04:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:47,617 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) [2022-07-11 23:04:47,622 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 [2022-07-11 23:04:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:04:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:04:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:04:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:04:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:04:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:04:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:04:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:04:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:04:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:04:47,730 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:04:47,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:04:47,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:04:47,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:04:47,913 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 23:04:47,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:47 BoogieIcfgContainer [2022-07-11 23:04:47,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:04:47,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:04:47,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:04:47,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:04:47,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:04:47" (1/3) ... [2022-07-11 23:04:47,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48639d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:47, skipping insertion in model container [2022-07-11 23:04:47,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:47" (2/3) ... [2022-07-11 23:04:47,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48639d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:47, skipping insertion in model container [2022-07-11 23:04:47,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:47" (3/3) ... [2022-07-11 23:04:47,924 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-07-11 23:04:47,934 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:04:47,935 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:04:47,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:04:47,984 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@7e24f686, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3338c33d [2022-07-11 23:04:47,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:04:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:04:47,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:47,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:47,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2022-07-11 23:04:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715204485] [2022-07-11 23:04:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:04:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:48,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715204485] [2022-07-11 23:04:48,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715204485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:48,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:48,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:04:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277601523] [2022-07-11 23:04:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:48,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:04:48,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:04:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:48,120 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:48,133 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2022-07-11 23:04:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:04:48,135 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-11 23:04:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:48,144 INFO L225 Difference]: With dead ends: 49 [2022-07-11 23:04:48,145 INFO L226 Difference]: Without dead ends: 22 [2022-07-11 23:04:48,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:48,151 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-07-11 23:04:48,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-11 23:04:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-11 23:04:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-11 23:04:48,216 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-07-11 23:04:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:48,217 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-11 23:04:48,217 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-11 23:04:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-11 23:04:48,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:48,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:04:48,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2022-07-11 23:04:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77200346] [2022-07-11 23:04:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:04:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-11 23:04:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 23:04:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77200346] [2022-07-11 23:04:48,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77200346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:48,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:48,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:04:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049371253] [2022-07-11 23:04:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:48,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:04:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:48,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:04:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:04:48,336 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:48,362 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-11 23:04:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:04:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-11 23:04:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:48,363 INFO L225 Difference]: With dead ends: 27 [2022-07-11 23:04:48,363 INFO L226 Difference]: Without dead ends: 23 [2022-07-11 23:04:48,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:48,364 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:48,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-11 23:04:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-11 23:04:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-11 23:04:48,369 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2022-07-11 23:04:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:48,370 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-11 23:04:48,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-11 23:04:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 23:04:48,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:48,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:48,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:04:48,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2022-07-11 23:04:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:48,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92335557] [2022-07-11 23:04:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:48,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:04:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-11 23:04:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 23:04:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:48,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92335557] [2022-07-11 23:04:48,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92335557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:48,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:48,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:04:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588531983] [2022-07-11 23:04:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:04:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:04:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:48,462 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:48,493 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-07-11 23:04:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:04:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-07-11 23:04:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:48,494 INFO L225 Difference]: With dead ends: 43 [2022-07-11 23:04:48,495 INFO L226 Difference]: Without dead ends: 26 [2022-07-11 23:04:48,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:48,496 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 61 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-11 23:04:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-07-11 23:04:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-11 23:04:48,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2022-07-11 23:04:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:48,501 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-11 23:04:48,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-11 23:04:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:04:48,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:48,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:48,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:04:48,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:48,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:48,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2022-07-11 23:04:48,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:48,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807204309] [2022-07-11 23:04:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:48,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:48,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:48,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713005560] [2022-07-11 23:04:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:48,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:48,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:48,519 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) [2022-07-11 23:04:48,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:04:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:48,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 23:04:48,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 23:04:48,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:04:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:04:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807204309] [2022-07-11 23:04:48,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:04:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713005560] [2022-07-11 23:04:48,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713005560] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:04:48,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:04:48,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-07-11 23:04:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926411869] [2022-07-11 23:04:48,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:04:48,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:04:48,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:04:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:04:48,969 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:04:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:49,176 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-07-11 23:04:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-11 23:04:49,177 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 31 [2022-07-11 23:04:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:49,180 INFO L225 Difference]: With dead ends: 73 [2022-07-11 23:04:49,180 INFO L226 Difference]: Without dead ends: 42 [2022-07-11 23:04:49,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-07-11 23:04:49,188 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:49,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:04:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-11 23:04:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2022-07-11 23:04:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-11 23:04:49,198 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 31 [2022-07-11 23:04:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:49,199 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-11 23:04:49,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:04:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-11 23:04:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:04:49,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:49,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:49,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 23:04:49,415 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 [2022-07-11 23:04:49,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1214758882, now seen corresponding path program 2 times [2022-07-11 23:04:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:49,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075084228] [2022-07-11 23:04:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:49,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:49,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:49,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550910128] [2022-07-11 23:04:49,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:04:49,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:49,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:49,439 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) [2022-07-11 23:04:49,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 23:04:49,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:04:49,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:04:49,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 23:04:49,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:04:49,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:04:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 23:04:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:49,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075084228] [2022-07-11 23:04:49,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:04:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550910128] [2022-07-11 23:04:49,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550910128] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:04:49,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:04:49,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-11 23:04:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406652379] [2022-07-11 23:04:49,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:04:49,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:04:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:04:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:04:49,733 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 23:04:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:49,855 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-07-11 23:04:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 23:04:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2022-07-11 23:04:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:49,856 INFO L225 Difference]: With dead ends: 40 [2022-07-11 23:04:49,856 INFO L226 Difference]: Without dead ends: 36 [2022-07-11 23:04:49,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:04:49,857 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:49,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 78 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:04:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-11 23:04:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-11 23:04:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-07-11 23:04:49,875 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 35 [2022-07-11 23:04:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:49,875 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-07-11 23:04:49,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 23:04:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-07-11 23:04:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:04:49,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:49,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:49,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-11 23:04:50,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:50,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 3 times [2022-07-11 23:04:50,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:50,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61919792] [2022-07-11 23:04:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:50,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:50,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453956608] [2022-07-11 23:04:50,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:04:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:50,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:04:50,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 23:04:50,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-11 23:04:50,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:04:50,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-11 23:04:50,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:50,368 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 10 treesize of output 8 [2022-07-11 23:04:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,403 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-11 23:04:50,408 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 16 treesize of output 15 [2022-07-11 23:04:50,412 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 33 treesize of output 32 [2022-07-11 23:04:50,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,491 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-11 23:04:50,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2022-07-11 23:04:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-11 23:04:50,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,562 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-11 23:04:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,584 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-11 23:04:50,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-07-11 23:04:50,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:50,599 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-11 23:04:50,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-11 23:04:51,811 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-11 23:04:51,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1182 treesize of output 1097 [2022-07-11 23:04:51,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,148 INFO L244 Elim1Store]: Index analysis took 294 ms [2022-07-11 23:04:52,167 INFO L356 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-07-11 23:04:52,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 26 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 431 treesize of output 518 [2022-07-11 23:04:52,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:52,450 INFO L244 Elim1Store]: Index analysis took 235 ms [2022-07-11 23:04:52,499 INFO L356 Elim1Store]: treesize reduction 175, result has 0.6 percent of original size [2022-07-11 23:04:52,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 7 select indices, 7 select index equivalence classes, 32 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 6 case distinctions, treesize of input 667 treesize of output 1321 [2022-07-11 23:04:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:53,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:53,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:53,716 INFO L244 Elim1Store]: Index analysis took 309 ms [2022-07-11 23:04:54,224 INFO L356 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2022-07-11 23:04:54,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 8 select indices, 8 select index equivalence classes, 32 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 484 treesize of output 763 [2022-07-11 23:04:55,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:55,260 INFO L244 Elim1Store]: Index analysis took 187 ms [2022-07-11 23:04:55,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:55,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61919792] [2022-07-11 23:04:55,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:04:55,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453956608] [2022-07-11 23:04:55,357 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-11 23:04:55,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 23:04:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:55,558 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraintForOnePosition(ArrayIndexEqualityManager.java:415) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraint(ArrayIndexEqualityManager.java:449) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.constructWriteConstraints2(Elim1Store.java:995) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:314) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-11 23:04:55,561 INFO L158 Benchmark]: Toolchain (without parser) took 8270.19ms. Allocated memory was 100.7MB in the beginning and 188.7MB in the end (delta: 88.1MB). Free memory was 70.5MB in the beginning and 59.6MB in the end (delta: 10.9MB). Peak memory consumption was 99.5MB. Max. memory is 16.1GB. [2022-07-11 23:04:55,561 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:04:55,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.74ms. Allocated memory is still 100.7MB. Free memory was 70.2MB in the beginning and 76.5MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-11 23:04:55,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.58ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:04:55,561 INFO L158 Benchmark]: Boogie Preprocessor took 34.92ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 73.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-11 23:04:55,561 INFO L158 Benchmark]: RCFGBuilder took 323.67ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 61.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-11 23:04:55,562 INFO L158 Benchmark]: TraceAbstraction took 7643.49ms. Allocated memory was 100.7MB in the beginning and 188.7MB in the end (delta: 88.1MB). Free memory was 61.5MB in the beginning and 59.6MB in the end (delta: 1.9MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. [2022-07-11 23:04:55,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.74ms. Allocated memory is still 100.7MB. Free memory was 70.2MB in the beginning and 76.5MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.58ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.92ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 73.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.67ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 61.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7643.49ms. Allocated memory was 100.7MB in the beginning and 188.7MB in the end (delta: 88.1MB). Free memory was 61.5MB in the beginning and 59.6MB in the end (delta: 1.9MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-11 23:04:55,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/array-patterns/array7_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:04:57,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:04:57,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:04:57,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:04:57,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:04:57,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:04:57,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:04:57,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:04:57,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:04:57,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:04:57,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:04:57,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:04:57,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:04:57,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:04:57,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:04:57,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:04:57,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:04:57,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:04:57,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:04:57,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:04:57,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:04:57,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:04:57,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:04:57,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:04:57,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:04:57,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:04:57,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:04:57,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:04:57,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:04:57,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:04:57,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:04:57,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:04:57,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:04:57,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:04:57,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:04:57,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:04:57,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:04:57,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:04:57,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:04:57,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:04:57,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:04:57,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:04:57,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-11 23:04:57,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:04:57,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:04:57,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:04:57,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:04:57,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:04:57,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:04:57,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:04:57,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:04:57,301 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:04:57,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:04:57,301 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:04:57,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:04:57,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-11 23:04:57,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-11 23:04:57,303 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:04:57,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:04:57,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:04:57,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:04:57,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:04:57,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:04:57,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-11 23:04:57,304 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-11 23:04:57,305 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:04:57,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:04:57,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:04:57,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-11 23:04:57,305 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2022-07-11 23:04:57,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:04:57,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:04:57,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:04:57,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:04:57,590 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:04:57,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-11 23:04:57,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420c71f77/a03c188a1c72439daa7353b14eca24aa/FLAG6769483ad [2022-07-11 23:04:58,011 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:04:58,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-11 23:04:58,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420c71f77/a03c188a1c72439daa7353b14eca24aa/FLAG6769483ad [2022-07-11 23:04:58,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420c71f77/a03c188a1c72439daa7353b14eca24aa [2022-07-11 23:04:58,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:04:58,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:04:58,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:04:58,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:04:58,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:04:58,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b3098e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58, skipping insertion in model container [2022-07-11 23:04:58,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:04:58,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:04:58,588 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-11 23:04:58,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:04:58,628 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:04:58,674 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-11 23:04:58,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:04:58,709 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:04:58,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58 WrapperNode [2022-07-11 23:04:58,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:04:58,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:04:58,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:04:58,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:04:58,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,750 INFO L137 Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2022-07-11 23:04:58,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:04:58,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:04:58,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:04:58,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:04:58,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:04:58,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:04:58,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:04:58,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:04:58,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (1/1) ... [2022-07-11 23:04:58,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:04:58,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:58,816 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) [2022-07-11 23:04:58,834 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 [2022-07-11 23:04:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:04:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-11 23:04:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:04:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:04:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:04:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-11 23:04:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:04:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:04:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:04:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-11 23:04:58,934 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:04:58,936 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:04:59,150 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:04:59,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:04:59,155 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 23:04:59,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:59 BoogieIcfgContainer [2022-07-11 23:04:59,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:04:59,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:04:59,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:04:59,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:04:59,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:04:58" (1/3) ... [2022-07-11 23:04:59,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed9d359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:59, skipping insertion in model container [2022-07-11 23:04:59,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:04:58" (2/3) ... [2022-07-11 23:04:59,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed9d359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:59, skipping insertion in model container [2022-07-11 23:04:59,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:59" (3/3) ... [2022-07-11 23:04:59,180 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-07-11 23:04:59,191 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:04:59,192 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:04:59,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:04:59,240 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@4000215a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e8dac0a [2022-07-11 23:04:59,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:04:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:04:59,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:59,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:59,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2022-07-11 23:04:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:04:59,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062609030] [2022-07-11 23:04:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:04:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:04:59,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:04:59,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-11 23:04:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:59,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-11 23:04:59,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:04:59,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:04:59,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:04:59,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062609030] [2022-07-11 23:04:59,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062609030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:59,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:59,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:04:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374577184] [2022-07-11 23:04:59,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:59,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:04:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:04:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:04:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:59,426 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:59,441 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2022-07-11 23:04:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:04:59,443 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-11 23:04:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:59,447 INFO L225 Difference]: With dead ends: 49 [2022-07-11 23:04:59,447 INFO L226 Difference]: Without dead ends: 22 [2022-07-11 23:04:59,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:59,451 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-07-11 23:04:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-11 23:04:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-11 23:04:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-11 23:04:59,473 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-07-11 23:04:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:59,473 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-11 23:04:59,473 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-11 23:04:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-11 23:04:59,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:59,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:59,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-11 23:04:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-11 23:04:59,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2022-07-11 23:04:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:04:59,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437549221] [2022-07-11 23:04:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:04:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:04:59,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:04:59,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-11 23:04:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:59,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 23:04:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 23:04:59,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:04:59,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:04:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437549221] [2022-07-11 23:04:59,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437549221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:59,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:59,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:04:59,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638058759] [2022-07-11 23:04:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:04:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:04:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:04:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:04:59,860 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:59,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:59,909 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-11 23:04:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:04:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-11 23:04:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:59,911 INFO L225 Difference]: With dead ends: 27 [2022-07-11 23:04:59,911 INFO L226 Difference]: Without dead ends: 23 [2022-07-11 23:04:59,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:59,912 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:59,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-11 23:04:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-11 23:04:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-11 23:04:59,919 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2022-07-11 23:04:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:59,920 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-11 23:04:59,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:04:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-11 23:04:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 23:04:59,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:59,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:59,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-11 23:05:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-11 23:05:00,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2022-07-11 23:05:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:05:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364491180] [2022-07-11 23:05:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:00,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:05:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:05:00,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:05:00,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-11 23:05:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:00,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:05:00,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 23:05:00,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:05:00,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:05:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364491180] [2022-07-11 23:05:00,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364491180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:05:00,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:05:00,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:05:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47296900] [2022-07-11 23:05:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:05:00,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:05:00,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:05:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:05:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:05:00,390 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:05:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:00,395 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-07-11 23:05:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:05:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-07-11 23:05:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:00,397 INFO L225 Difference]: With dead ends: 45 [2022-07-11 23:05:00,397 INFO L226 Difference]: Without dead ends: 28 [2022-07-11 23:05:00,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:05:00,398 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:00,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-07-11 23:05:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-11 23:05:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-11 23:05:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-07-11 23:05:00,416 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 29 [2022-07-11 23:05:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:00,417 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-07-11 23:05:00,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:05:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-07-11 23:05:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:05:00,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:00,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:00,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-11 23:05:00,618 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2022-07-11 23:05:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:05:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396408210] [2022-07-11 23:05:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:05:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:05:00,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:05:00,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-11 23:05:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 23:05:00,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 23:05:01,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:05,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:05:05,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396408210] [2022-07-11 23:05:05,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396408210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:05,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536954378] [2022-07-11 23:05:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:05,526 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-11 23:05:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-11 23:05:05,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-11 23:05:05,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-07-11 23:05:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:05,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-11 23:05:05,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 23:05:06,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 23:05:08,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536954378] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:08,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 23:05:08,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 23 [2022-07-11 23:05:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934108686] [2022-07-11 23:05:08,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:08,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-11 23:05:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:05:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-11 23:05:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=557, Unknown=2, NotChecked=0, Total=702 [2022-07-11 23:05:08,003 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-11 23:05:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:08,988 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-07-11 23:05:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-11 23:05:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 31 [2022-07-11 23:05:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:08,992 INFO L225 Difference]: With dead ends: 61 [2022-07-11 23:05:08,992 INFO L226 Difference]: Without dead ends: 37 [2022-07-11 23:05:08,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=180, Invalid=688, Unknown=2, NotChecked=0, Total=870 [2022-07-11 23:05:08,993 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:08,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 146 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 117 Unchecked, 0.2s Time] [2022-07-11 23:05:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-11 23:05:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-07-11 23:05:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-07-11 23:05:09,007 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-07-11 23:05:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:09,008 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-07-11 23:05:09,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-11 23:05:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-07-11 23:05:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:05:09,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:09,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:09,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:09,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:09,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-11 23:05:09,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash 891431106, now seen corresponding path program 2 times [2022-07-11 23:05:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:05:09,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865783092] [2022-07-11 23:05:09,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:05:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:05:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:05:09,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:05:09,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-11 23:05:09,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:05:09,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-11 23:05:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:05:11,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-11 23:05:13,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:05:13,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865783092] [2022-07-11 23:05:13,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865783092] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:13,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:13,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2022-07-11 23:05:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183511401] [2022-07-11 23:05:13,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:13,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-11 23:05:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:05:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-11 23:05:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-07-11 23:05:13,283 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-11 23:05:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:14,474 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-07-11 23:05:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-11 23:05:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-07-11 23:05:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:14,478 INFO L225 Difference]: With dead ends: 60 [2022-07-11 23:05:14,478 INFO L226 Difference]: Without dead ends: 56 [2022-07-11 23:05:14,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2022-07-11 23:05:14,479 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:14,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 144 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-07-11 23:05:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-11 23:05:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2022-07-11 23:05:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-07-11 23:05:14,485 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 35 [2022-07-11 23:05:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:14,486 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-07-11 23:05:14,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-11 23:05:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-07-11 23:05:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-11 23:05:14,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:14,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:14,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-11 23:05:14,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2020034404, now seen corresponding path program 3 times [2022-07-11 23:05:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:05:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883585020] [2022-07-11 23:05:14,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:05:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:05:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:05:14,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:05:14,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-11 23:05:14,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-11 23:05:14,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:14,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-11 23:05:14,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:05:15,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 23:05:16,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-11 23:05:16,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883585020] [2022-07-11 23:05:16,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883585020] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:16,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:16,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-07-11 23:05:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276634649] [2022-07-11 23:05:16,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-11 23:05:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-11 23:05:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-11 23:05:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-07-11 23:05:16,401 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-11 23:05:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:17,399 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-07-11 23:05:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-11 23:05:17,400 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-07-11 23:05:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:17,403 INFO L225 Difference]: With dead ends: 57 [2022-07-11 23:05:17,403 INFO L226 Difference]: Without dead ends: 36 [2022-07-11 23:05:17,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2022-07-11 23:05:17,406 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:17,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 189 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 83 Invalid, 0 Unknown, 103 Unchecked, 0.3s Time] [2022-07-11 23:05:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-11 23:05:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-11 23:05:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-07-11 23:05:17,412 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 37 [2022-07-11 23:05:17,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:17,412 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-07-11 23:05:17,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-11 23:05:17,412 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-07-11 23:05:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:05:17,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:17,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:17,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-11 23:05:17,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 4 times [2022-07-11 23:05:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-11 23:05:17,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335284100] [2022-07-11 23:05:17,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 23:05:17,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-11 23:05:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-11 23:05:17,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-11 23:05:17,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-11 23:05:17,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 23:05:17,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:17,896 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-11 23:05:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:18,032 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 10 treesize of output 8 [2022-07-11 23:05:18,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:18,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2022-07-11 23:05:18,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:18,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:18,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 67 [2022-07-11 23:05:19,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:19,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:19,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:19,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:19,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-07-11 23:05:21,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:21,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:21,926 INFO L356 Elim1Store]: treesize reduction 134, result has 7.6 percent of original size [2022-07-11 23:05:21,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 161 treesize of output 133 [2022-07-11 23:05:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:24,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:24,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:24,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:24,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:24,391 INFO L356 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2022-07-11 23:05:24,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 110 treesize of output 53 [2022-07-11 23:05:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:05:24,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:06:27,523 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_162 (_ BitVec 32)) (|ULTIMATE.start_main_#t~nondet7#1| (_ BitVec 16)) (|ULTIMATE.start_main_#t~nondet6#1| (_ BitVec 16))) (let ((.cse2 ((_ sign_extend 48) |ULTIMATE.start_main_#t~nondet7#1|))) (let ((.cse1 (bvneg .cse2)) (.cse0 ((_ sign_extend 48) |ULTIMATE.start_main_#t~nondet6#1|))) (or (not (bvslt .cse0 (bvadd .cse1 c_~ARR_SIZE~0))) (not (bvsge .cse0 .cse2)) (= (_ bv0 64) (let ((.cse7 (bvmul (_ bv4 32) ((_ extract 31 0) .cse0))) (.cse9 (bvmul ((_ extract 31 0) (bvadd .cse0 .cse1)) (_ bv4 32))) (.cse8 (bvmul (_ bv4 32) ((_ extract 31 0) (bvadd .cse0 .cse2))))) (let ((.cse5 (let ((.cse10 (let ((.cse14 (bvmul |c_ULTIMATE.start_main_~num~0#1| (bvadd |c_ULTIMATE.start_main_~count~0#1| (_ bv1 32)))) (.cse13 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~count~0#1|))) (let ((.cse12 (let ((.cse15 (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (bvadd .cse13 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (bvmul |c_ULTIMATE.start_main_~num~0#1| (bvmul |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~count~0#1|)))))) (store .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base|) (bvadd .cse13 |c_ULTIMATE.start_main_~#array2~0#1.offset|) v_ArrVal_162))))) (store .cse15 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse15 |c_ULTIMATE.start_main_~#array1~0#1.base|) (bvadd .cse13 (_ bv4 32) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (bvmul |c_ULTIMATE.start_main_~num~0#1| .cse14)))))) (store .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base|) (bvadd .cse13 (_ bv4 32) |c_ULTIMATE.start_main_~#array2~0#1.offset|) .cse14)))))) (store .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse11 (bvadd |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse7) (bvadd (select .cse11 (bvadd |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse9)) (select .cse11 (bvadd .cse8 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))))))) (let ((.cse4 (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (store .cse6 (bvadd |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7) (bvadd (select .cse6 (bvadd .cse8 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (select .cse6 (bvadd |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse9))))))) (let ((.cse3 (select (store .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse4) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (bvadd ((_ sign_extend 32) (select .cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) ((_ sign_extend 32) (select .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (bvmul (_ bv18446744073709551615 64) ((_ sign_extend 32) (_ bv2 32))) ((_ sign_extend 32) (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) (_ bv18446744073709551615 64)) ((_ sign_extend 32) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) ((_ sign_extend 32) (select .cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) ((_ sign_extend 32) (select .cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) |c_ULTIMATE.start_main_~sum~0#1|)))))) (not (bvsgt .cse2 (_ bv0 64))))))) (not (bvslt ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~count~0#1| (_ bv1 32))) c_~ARR_SIZE~0)) (bvslt ((_ sign_extend 32) (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~count~0#1|)) c_~ARR_SIZE~0)) is different from true [2022-07-11 23:06:57,209 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)