./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ssina.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-fpi/ssina.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 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:22:30,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:22:30,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:22:30,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:22:30,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:22:30,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:22:30,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:22:30,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:22:30,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:22:30,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:22:30,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:22:30,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:22:30,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:22:30,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:22:30,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:22:30,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:22:30,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:22:30,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:22:30,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:22:30,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:22:30,675 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:22:30,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:22:30,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:22:30,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:22:30,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:22:30,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:22:30,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:22:30,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:22:30,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:22:30,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:22:30,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:22:30,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:22:30,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:22:30,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:22:30,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:22:30,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:22:30,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:22:30,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:22:30,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:22:30,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:22:30,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:22:30,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:22:30,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:22:30,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:22:30,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:22:30,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:22:30,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:22:30,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:22:30,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:22:30,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:22:30,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:22:30,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:22:30,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:22:30,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:22:30,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:22:30,713 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:22:30,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:22:30,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:22:30,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-13 11:22:30,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:22:30,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:22:30,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:22:30,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:22:30,899 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:22:30,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-13 11:22:30,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d088c708/6e34d2a8c4da430890e865edeea3e43c/FLAG2db073e28 [2022-07-13 11:22:31,306 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:22:31,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-13 11:22:31,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d088c708/6e34d2a8c4da430890e865edeea3e43c/FLAG2db073e28 [2022-07-13 11:22:31,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d088c708/6e34d2a8c4da430890e865edeea3e43c [2022-07-13 11:22:31,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:22:31,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:22:31,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:22:31,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:22:31,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:22:31,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633f6faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31, skipping insertion in model container [2022-07-13 11:22:31,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:22:31,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:22:31,441 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-fpi/ssina.c[588,601] [2022-07-13 11:22:31,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:22:31,479 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:22:31,488 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-fpi/ssina.c[588,601] [2022-07-13 11:22:31,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:22:31,504 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:22:31,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31 WrapperNode [2022-07-13 11:22:31,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:22:31,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:22:31,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:22:31,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:22:31,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,527 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2022-07-13 11:22:31,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:22:31,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:22:31,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:22:31,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:22:31,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:22:31,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:22:31,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:22:31,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:22:31,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (1/1) ... [2022-07-13 11:22:31,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:22:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:22:31,589 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) [2022-07-13 11:22:31,606 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 [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:22:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:22:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:22:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 11:22:31,658 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:22:31,660 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:22:31,771 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:22:31,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:22:31,775 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 11:22:31,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:22:31 BoogieIcfgContainer [2022-07-13 11:22:31,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:22:31,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:22:31,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:22:31,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:22:31,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:22:31" (1/3) ... [2022-07-13 11:22:31,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1c3871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:22:31, skipping insertion in model container [2022-07-13 11:22:31,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:22:31" (2/3) ... [2022-07-13 11:22:31,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1c3871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:22:31, skipping insertion in model container [2022-07-13 11:22:31,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:22:31" (3/3) ... [2022-07-13 11:22:31,781 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-13 11:22:31,791 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:22:31,791 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:22:31,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:22:31,873 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@518815de, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4784d0c [2022-07-13 11:22:31,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:22:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 11:22:31,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:31,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:31,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-13 11:22:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:31,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135454284] [2022-07-13 11:22:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:22:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:22:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:22:31,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135454284] [2022-07-13 11:22:31,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135454284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:22:31,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:22:31,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:22:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468275126] [2022-07-13 11:22:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:22:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 11:22:31,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:22:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 11:22:32,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:22:32,009 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:22:32,019 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-13 11:22:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 11:22:32,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 11:22:32,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:22:32,025 INFO L225 Difference]: With dead ends: 56 [2022-07-13 11:22:32,025 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 11:22:32,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:22:32,029 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-13 11:22:32,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:22:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 11:22:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-13 11:22:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-13 11:22:32,056 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-13 11:22:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:22:32,071 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-13 11:22:32,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,072 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-13 11:22:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 11:22:32,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:32,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:22:32,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-13 11:22:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:32,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116504507] [2022-07-13 11:22:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:22:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:22:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:22:32,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116504507] [2022-07-13 11:22:32,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116504507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:22:32,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:22:32,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:22:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648215652] [2022-07-13 11:22:32,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:22:32,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:22:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:22:32,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:22:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:22:32,156 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:22:32,213 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-13 11:22:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:22:32,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 11:22:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:22:32,214 INFO L225 Difference]: With dead ends: 61 [2022-07-13 11:22:32,214 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 11:22:32,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:22:32,215 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:22:32,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:22:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 11:22:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-13 11:22:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-13 11:22:32,221 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-13 11:22:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:22:32,221 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-13 11:22:32,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-13 11:22:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 11:22:32,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:32,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:32,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:22:32,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-13 11:22:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460661672] [2022-07-13 11:22:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:32,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:22:32,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280659880] [2022-07-13 11:22:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:32,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:32,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:22:32,281 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) [2022-07-13 11:22:32,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:22:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:22:32,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-13 11:22:32,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:22:32,417 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 [2022-07-13 11:22:32,425 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 11 treesize of output 7 [2022-07-13 11:22:32,462 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 23 treesize of output 22 [2022-07-13 11:22:32,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-13 11:22:32,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-13 11:22:32,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-07-13 11:22:32,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-13 11:22:32,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-13 11:22:33,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2022-07-13 11:22:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:22:33,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:22:35,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:22:35,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:22:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460661672] [2022-07-13 11:22:35,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:22:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280659880] [2022-07-13 11:22:35,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280659880] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:22:35,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:22:35,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-07-13 11:22:35,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216578082] [2022-07-13 11:22:35,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:22:35,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 11:22:35,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:22:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 11:22:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-07-13 11:22:35,222 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:22:37,312 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-07-13 11:22:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 11:22:37,313 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-13 11:22:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:22:37,313 INFO L225 Difference]: With dead ends: 58 [2022-07-13 11:22:37,313 INFO L226 Difference]: Without dead ends: 56 [2022-07-13 11:22:37,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 11:22:37,315 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:22:37,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 169 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 342 Invalid, 0 Unknown, 61 Unchecked, 1.1s Time] [2022-07-13 11:22:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-13 11:22:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2022-07-13 11:22:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-13 11:22:37,321 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2022-07-13 11:22:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:22:37,321 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-13 11:22:37,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-13 11:22:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 11:22:37,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:37,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:37,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:22:37,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:37,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-07-13 11:22:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333381242] [2022-07-13 11:22:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:37,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:22:37,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010095532] [2022-07-13 11:22:37,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 11:22:37,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:22:37,593 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) [2022-07-13 11:22:37,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:22:37,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 11:22:37,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:22:37,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 11:22:37,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:22:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 11:22:37,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:22:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 11:22:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:22:37,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333381242] [2022-07-13 11:22:37,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:22:37,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010095532] [2022-07-13 11:22:37,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010095532] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:22:37,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:22:37,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-13 11:22:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950607289] [2022-07-13 11:22:37,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:22:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:22:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:22:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:22:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:22:37,734 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:22:37,863 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2022-07-13 11:22:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:22:37,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 11:22:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:22:37,864 INFO L225 Difference]: With dead ends: 121 [2022-07-13 11:22:37,864 INFO L226 Difference]: Without dead ends: 78 [2022-07-13 11:22:37,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:22:37,865 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:22:37,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 47 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:22:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-13 11:22:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-07-13 11:22:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-07-13 11:22:37,876 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-07-13 11:22:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:22:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-07-13 11:22:37,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-07-13 11:22:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 11:22:37,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:37,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:37,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:22:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 11:22:38,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-07-13 11:22:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628598920] [2022-07-13 11:22:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:38,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:22:38,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468126765] [2022-07-13 11:22:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 11:22:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:22:38,125 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) [2022-07-13 11:22:38,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:22:38,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 11:22:38,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:22:38,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 11:22:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:22:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 11:22:38,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:22:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 11:22:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:22:38,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628598920] [2022-07-13 11:22:38,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:22:38,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468126765] [2022-07-13 11:22:38,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468126765] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:22:38,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:22:38,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-13 11:22:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535698806] [2022-07-13 11:22:38,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:22:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:22:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:22:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:22:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:22:38,250 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:22:38,366 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-07-13 11:22:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:22:38,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-13 11:22:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:22:38,368 INFO L225 Difference]: With dead ends: 74 [2022-07-13 11:22:38,368 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 11:22:38,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-13 11:22:38,371 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 127 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:22:38,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 36 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:22:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 11:22:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-07-13 11:22:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-07-13 11:22:38,380 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-07-13 11:22:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:22:38,380 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-07-13 11:22:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:22:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-07-13 11:22:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 11:22:38,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:22:38,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:22:38,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 11:22:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:38,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:22:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:22:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-07-13 11:22:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:22:38,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378804581] [2022-07-13 11:22:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:22:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:22:38,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:22:38,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877014111] [2022-07-13 11:22:38,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 11:22:38,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:22:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:22:38,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:22:38,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:22:38,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 11:22:38,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:22:38,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-13 11:22:38,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:22:38,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 11:22:38,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,698 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 23 treesize of output 22 [2022-07-13 11:22:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-13 11:22:38,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:38,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,833 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-07-13 11:22:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:38,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-13 11:22:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,007 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 44 [2022-07-13 11:22:39,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 39 [2022-07-13 11:22:39,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 47 [2022-07-13 11:22:39,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:39,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,190 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2022-07-13 11:22:39,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2022-07-13 11:22:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:39,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,395 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-07-13 11:22:39,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:22:39,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-07-13 11:22:39,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:22:39,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-07-13 11:22:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:22:39,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:23:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:23:29,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:23:29,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378804581] [2022-07-13 11:23:29,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:23:29,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877014111] [2022-07-13 11:23:29,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877014111] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:23:29,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:23:29,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2022-07-13 11:23:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482995873] [2022-07-13 11:23:29,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:23:29,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 11:23:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:23:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 11:23:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2132, Unknown=8, NotChecked=0, Total=2352 [2022-07-13 11:23:29,159 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:24:02,405 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 11:25:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:25:12,328 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2022-07-13 11:25:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-13 11:25:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-13 11:25:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:25:12,332 INFO L225 Difference]: With dead ends: 103 [2022-07-13 11:25:12,332 INFO L226 Difference]: Without dead ends: 101 [2022-07-13 11:25:12,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 146.3s TimeCoverageRelationStatistics Valid=381, Invalid=4857, Unknown=18, NotChecked=0, Total=5256 [2022-07-13 11:25:12,336 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:25:12,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 158 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 769 Invalid, 0 Unknown, 261 Unchecked, 5.6s Time] [2022-07-13 11:25:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-13 11:25:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2022-07-13 11:25:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2022-07-13 11:25:12,353 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 38 [2022-07-13 11:25:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:25:12,353 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2022-07-13 11:25:12,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2022-07-13 11:25:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 11:25:12,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:12,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:12,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:25:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:12,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-07-13 11:25:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:25:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250270168] [2022-07-13 11:25:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:25:12,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:25:12,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100655385] [2022-07-13 11:25:12,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 11:25:12,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:12,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:25:12,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:25:12,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:25:12,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-13 11:25:12,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:25:12,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 11:25:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 11:25:12,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:25:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 11:25:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:25:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250270168] [2022-07-13 11:25:12,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:25:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100655385] [2022-07-13 11:25:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100655385] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:25:12,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:25:12,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-13 11:25:12,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853121725] [2022-07-13 11:25:12,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:25:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 11:25:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:25:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 11:25:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:25:12,831 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:25:13,105 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2022-07-13 11:25:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 11:25:13,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-07-13 11:25:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:25:13,106 INFO L225 Difference]: With dead ends: 159 [2022-07-13 11:25:13,106 INFO L226 Difference]: Without dead ends: 117 [2022-07-13 11:25:13,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-13 11:25:13,107 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 101 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:25:13,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 107 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:25:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-13 11:25:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 78. [2022-07-13 11:25:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2022-07-13 11:25:13,117 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 40 [2022-07-13 11:25:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:25:13,117 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2022-07-13 11:25:13,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2022-07-13 11:25:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 11:25:13,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:13,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:13,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 11:25:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:13,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2118485530, now seen corresponding path program 6 times [2022-07-13 11:25:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:25:13,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569742100] [2022-07-13 11:25:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:25:13,348 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:25:13,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509324571] [2022-07-13 11:25:13,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 11:25:13,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:25:13,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:25:13,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:25:13,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-13 11:25:13,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:25:13,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 11:25:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 11:25:13,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:25:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 11:25:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:25:13,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569742100] [2022-07-13 11:25:13,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:25:13,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509324571] [2022-07-13 11:25:13,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509324571] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:25:13,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:25:13,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-13 11:25:13,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035993651] [2022-07-13 11:25:13,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:25:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 11:25:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:25:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 11:25:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:25:13,500 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:25:13,690 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2022-07-13 11:25:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 11:25:13,691 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-07-13 11:25:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:25:13,692 INFO L225 Difference]: With dead ends: 143 [2022-07-13 11:25:13,692 INFO L226 Difference]: Without dead ends: 107 [2022-07-13 11:25:13,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-13 11:25:13,693 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 121 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:25:13,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 65 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:25:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-13 11:25:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-07-13 11:25:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-07-13 11:25:13,709 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-07-13 11:25:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:25:13,709 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-07-13 11:25:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-07-13 11:25:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 11:25:13,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:13,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:13,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 11:25:13,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:13,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-07-13 11:25:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:25:13,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905141961] [2022-07-13 11:25:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:25:13,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:25:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770441363] [2022-07-13 11:25:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:25:13,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:25:13,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 11:25:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:25:14,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-13 11:25:14,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:14,069 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 [2022-07-13 11:25:14,084 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 15 treesize of output 11 [2022-07-13 11:25:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-13 11:25:14,196 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 23 treesize of output 23 [2022-07-13 11:25:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-13 11:25:14,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:14,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,251 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-07-13 11:25:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-07-13 11:25:14,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-13 11:25:14,372 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 27 treesize of output 23 [2022-07-13 11:25:14,407 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 25 treesize of output 25 [2022-07-13 11:25:14,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-07-13 11:25:14,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:14,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,499 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2022-07-13 11:25:14,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:14,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-07-13 11:25:14,869 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:25:14,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2022-07-13 11:25:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 11:25:14,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:25:15,655 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:25:15,656 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 75 [2022-07-13 11:25:22,031 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-07-13 11:25:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:25:22,032 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 101 [2022-07-13 11:25:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905141961] [2022-07-13 11:25:22,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:25:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770441363] [2022-07-13 11:25:22,032 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-13 11:25:22,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 11:25:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:25:22,233 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:894) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-07-13 11:25:22,237 INFO L158 Benchmark]: Toolchain (without parser) took 170916.13ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 62.4MB in the beginning and 55.5MB in the end (delta: 6.8MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2022-07-13 11:25:22,237 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 11:25:22,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.24ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 73.4MB in the end (delta: -11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 11:25:22,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.13ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 71.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 11:25:22,237 INFO L158 Benchmark]: Boogie Preprocessor took 27.58ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 70.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 11:25:22,238 INFO L158 Benchmark]: RCFGBuilder took 213.42ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 58.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 11:25:22,238 INFO L158 Benchmark]: TraceAbstraction took 170459.38ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 58.3MB in the beginning and 55.5MB in the end (delta: 2.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-07-13 11:25:22,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.24ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 73.4MB in the end (delta: -11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.13ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 71.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.58ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 70.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.42ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 58.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 170459.38ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 58.3MB in the beginning and 55.5MB in the end (delta: 2.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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-fpi/ssina.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 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:25:23,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:25:23,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:25:23,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:25:23,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:25:23,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:25:23,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:25:23,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:25:23,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:25:23,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:25:23,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:25:23,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:25:23,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:25:23,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:25:23,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:25:23,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:25:23,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:25:23,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:25:23,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:25:23,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:25:23,663 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:25:23,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:25:23,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:25:23,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:25:23,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:25:23,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:25:23,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:25:23,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:25:23,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:25:23,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:25:23,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:25:23,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:25:23,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:25:23,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:25:23,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:25:23,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:25:23,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:25:23,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:25:23,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:25:23,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:25:23,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:25:23,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:25:23,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 11:25:23,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:25:23,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:25:23,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:25:23,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:25:23,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:25:23,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:25:23,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:25:23,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:25:23,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:25:23,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:25:23,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:25:23,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:25:23,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:25:23,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:25:23,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:25:23,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:25:23,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:25:23,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:25:23,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:25:23,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:25:23,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:25:23,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:25:23,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:25:23,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:25:23,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 11:25:23,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-13 11:25:24,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:25:24,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:25:24,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:25:24,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:25:24,037 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:25:24,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-13 11:25:24,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39e990e0/61ffc59d3897480fbc4438e34448a206/FLAG9ab91160b [2022-07-13 11:25:24,451 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:25:24,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-13 11:25:24,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39e990e0/61ffc59d3897480fbc4438e34448a206/FLAG9ab91160b [2022-07-13 11:25:24,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39e990e0/61ffc59d3897480fbc4438e34448a206 [2022-07-13 11:25:24,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:25:24,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:25:24,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:25:24,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:25:24,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:25:24,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213ea58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24, skipping insertion in model container [2022-07-13 11:25:24,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:25:24,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:25:24,623 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-fpi/ssina.c[588,601] [2022-07-13 11:25:24,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:25:24,675 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:25:24,706 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-fpi/ssina.c[588,601] [2022-07-13 11:25:24,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:25:24,731 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:25:24,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24 WrapperNode [2022-07-13 11:25:24,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:25:24,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:25:24,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:25:24,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:25:24,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,776 INFO L137 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2022-07-13 11:25:24,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:25:24,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:25:24,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:25:24,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:25:24,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:25:24,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:25:24,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:25:24,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:25:24,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (1/1) ... [2022-07-13 11:25:24,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:25:24,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:25:24,836 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) [2022-07-13 11:25:24,846 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 [2022-07-13 11:25:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:25:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 11:25:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 11:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-13 11:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:25:24,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-13 11:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 11:25:24,939 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:25:24,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:25:25,230 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:25:25,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:25:25,234 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 11:25:25,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:25:25 BoogieIcfgContainer [2022-07-13 11:25:25,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:25:25,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:25:25,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:25:25,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:25:25,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:25:24" (1/3) ... [2022-07-13 11:25:25,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb36b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:25:25, skipping insertion in model container [2022-07-13 11:25:25,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:25:24" (2/3) ... [2022-07-13 11:25:25,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb36b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:25:25, skipping insertion in model container [2022-07-13 11:25:25,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:25:25" (3/3) ... [2022-07-13 11:25:25,249 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-13 11:25:25,258 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:25:25,268 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:25:25,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:25:25,316 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@ed40a2e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c948588 [2022-07-13 11:25:25,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:25:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 11:25:25,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:25,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:25,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-13 11:25:25,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:25:25,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958625398] [2022-07-13 11:25:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:25,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:25:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:25:25,343 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) [2022-07-13 11:25:25,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 11:25:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:25:25,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 11:25:25,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:25:25,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:25:25,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:25:25,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958625398] [2022-07-13 11:25:25,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958625398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:25:25,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:25:25,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:25:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356536033] [2022-07-13 11:25:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:25:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 11:25:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:25:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 11:25:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:25:25,472 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:25:25,485 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-13 11:25:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 11:25:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 11:25:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:25:25,492 INFO L225 Difference]: With dead ends: 56 [2022-07-13 11:25:25,492 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 11:25:25,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:25:25,497 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-13 11:25:25,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:25:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 11:25:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-13 11:25:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-13 11:25:25,518 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-13 11:25:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:25:25,518 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-13 11:25:25,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-13 11:25:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 11:25:25,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:25,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:25,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 11:25:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:25:25,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-13 11:25:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:25:25,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612731084] [2022-07-13 11:25:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:25:25,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:25:25,729 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) [2022-07-13 11:25:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 11:25:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:25:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 11:25:25,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:25:25,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:25:25,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:25:25,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612731084] [2022-07-13 11:25:25,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612731084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:25:25,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:25:25,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:25:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178195001] [2022-07-13 11:25:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:25:25,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:25:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:25:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:25:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:25:25,904 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:25:26,154 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-13 11:25:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 11:25:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 11:25:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:25:26,161 INFO L225 Difference]: With dead ends: 61 [2022-07-13 11:25:26,161 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 11:25:26,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:25:26,162 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:25:26,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 16 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:25:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 11:25:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-13 11:25:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-13 11:25:26,167 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-13 11:25:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:25:26,167 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-13 11:25:26,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:25:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-13 11:25:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 11:25:26,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:25:26,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:25:26,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:25:26,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:25:26,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:25:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:25:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-13 11:25:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:25:26,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778926040] [2022-07-13 11:25:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:25:26,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:25:26,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:25:26,373 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) [2022-07-13 11:25:26,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 11:25:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:25:26,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-13 11:25:26,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:25:26,622 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 11 treesize of output 9 [2022-07-13 11:25:26,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:26,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:26,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:25:26,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:26,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:26,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:26,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-07-13 11:25:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:27,032 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-13 11:25:27,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 63 [2022-07-13 11:25:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 73 [2022-07-13 11:25:27,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:27,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:27,398 INFO L356 Elim1Store]: treesize reduction 52, result has 24.6 percent of original size [2022-07-13 11:25:27,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 99 treesize of output 75 [2022-07-13 11:25:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:25:27,515 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-13 11:25:27,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 107 [2022-07-13 11:25:27,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:25:27,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 159 [2022-07-13 11:25:27,983 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-13 11:25:27,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 391 treesize of output 355 [2022-07-13 11:25:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:25:28,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:27:07,393 INFO L173 IndexEqualityManager]: detected equality via solver