./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/lcp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/verifythis/lcp.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 10:58:58,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 10:58:58,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 10:58:58,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 10:58:58,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 10:58:58,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 10:58:58,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 10:58:58,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 10:58:58,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 10:58:58,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 10:58:58,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 10:58:58,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 10:58:58,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 10:58:58,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 10:58:58,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 10:58:58,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 10:58:58,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 10:58:58,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 10:58:58,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 10:58:58,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 10:58:58,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 10:58:58,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 10:58:58,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 10:58:58,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 10:58:58,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 10:58:58,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 10:58:58,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 10:58:58,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 10:58:58,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 10:58:58,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 10:58:58,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 10:58:58,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 10:58:58,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 10:58:58,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 10:58:58,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 10:58:58,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 10:58:58,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 10:58:58,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 10:58:58,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 10:58:58,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 10:58:58,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 10:58:58,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 10:58:58,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 10:58:58,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 10:58:58,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 10:58:58,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 10:58:58,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 10:58:58,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 10:58:58,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 10:58:58,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 10:58:58,710 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 10:58:58,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 10:58:58,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 10:58:58,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 10:58:58,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 10:58:58,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 10:58:58,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 10:58:58,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 10:58:58,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:58:58,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 10:58:58,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 10:58:58,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 10:58:58,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 10:58:58,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 10:58:58,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 10:58:58,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 10:58:58,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2021-12-17 10:58:58,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 10:58:59,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 10:58:59,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 10:58:59,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 10:58:59,017 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 10:58:59,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-12-17 10:58:59,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e4be72d/85cb1e61d9874edfa0d06d83c6f7c1e6/FLAGd5db96036 [2021-12-17 10:58:59,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 10:58:59,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-12-17 10:58:59,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e4be72d/85cb1e61d9874edfa0d06d83c6f7c1e6/FLAGd5db96036 [2021-12-17 10:58:59,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e4be72d/85cb1e61d9874edfa0d06d83c6f7c1e6 [2021-12-17 10:58:59,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 10:58:59,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 10:58:59,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 10:58:59,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 10:58:59,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 10:58:59,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a68fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59, skipping insertion in model container [2021-12-17 10:58:59,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 10:58:59,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 10:58:59,677 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/verifythis/lcp.c[515,528] [2021-12-17 10:58:59,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:58:59,716 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 10:58:59,727 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/verifythis/lcp.c[515,528] [2021-12-17 10:58:59,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:58:59,760 INFO L208 MainTranslator]: Completed translation [2021-12-17 10:58:59,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59 WrapperNode [2021-12-17 10:58:59,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 10:58:59,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 10:58:59,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 10:58:59,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 10:58:59,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,802 INFO L137 Inliner]: procedures = 20, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2021-12-17 10:58:59,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 10:58:59,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 10:58:59,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 10:58:59,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 10:58:59,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 10:58:59,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 10:58:59,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 10:58:59,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 10:58:59,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (1/1) ... [2021-12-17 10:58:59,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:58:59,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:58:59,863 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) [2021-12-17 10:58:59,884 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 [2021-12-17 10:58:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 10:58:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 10:58:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 10:58:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 10:58:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 10:58:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 10:58:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 10:58:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 10:58:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 10:58:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 10:58:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 10:58:59,991 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 10:58:59,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 10:59:00,155 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 10:59:00,158 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 10:59:00,158 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 10:59:00,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:00 BoogieIcfgContainer [2021-12-17 10:59:00,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 10:59:00,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 10:59:00,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 10:59:00,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 10:59:00,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:58:59" (1/3) ... [2021-12-17 10:59:00,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60129a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:00, skipping insertion in model container [2021-12-17 10:59:00,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:58:59" (2/3) ... [2021-12-17 10:59:00,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60129a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:00, skipping insertion in model container [2021-12-17 10:59:00,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:00" (3/3) ... [2021-12-17 10:59:00,165 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-12-17 10:59:00,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 10:59:00,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 10:59:00,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 10:59:00,218 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 10:59:00,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 10:59:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 10:59:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 10:59:00,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:00,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:00,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash 867982546, now seen corresponding path program 1 times [2021-12-17 10:59:00,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638020448] [2021-12-17 10:59:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:00,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 10:59:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 10:59:00,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:00,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638020448] [2021-12-17 10:59:00,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638020448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:00,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:00,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 10:59:00,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243126888] [2021-12-17 10:59:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:00,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 10:59:00,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:00,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 10:59:00,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:59:00,481 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:00,499 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2021-12-17 10:59:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 10:59:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-17 10:59:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:00,506 INFO L225 Difference]: With dead ends: 63 [2021-12-17 10:59:00,507 INFO L226 Difference]: Without dead ends: 28 [2021-12-17 10:59:00,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:59:00,514 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:00,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:59:00,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-17 10:59:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-17 10:59:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-17 10:59:00,544 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2021-12-17 10:59:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:00,544 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-17 10:59:00,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-17 10:59:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 10:59:00,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:00,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:00,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 10:59:00,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:00,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1785702985, now seen corresponding path program 1 times [2021-12-17 10:59:00,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:00,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795231267] [2021-12-17 10:59:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:00,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 10:59:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 10:59:00,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795231267] [2021-12-17 10:59:00,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795231267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:00,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:00,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 10:59:00,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801118479] [2021-12-17 10:59:00,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:00,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 10:59:00,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 10:59:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 10:59:00,743 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 10:59:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:00,900 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-12-17 10:59:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 10:59:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-12-17 10:59:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:00,902 INFO L225 Difference]: With dead ends: 58 [2021-12-17 10:59:00,905 INFO L226 Difference]: Without dead ends: 40 [2021-12-17 10:59:00,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 10:59:00,907 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:00,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 82 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:59:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-17 10:59:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2021-12-17 10:59:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-17 10:59:00,919 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2021-12-17 10:59:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:00,919 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-17 10:59:00,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 10:59:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-17 10:59:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 10:59:00,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:00,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:00,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 10:59:00,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash 774585735, now seen corresponding path program 1 times [2021-12-17 10:59:00,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:00,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675213440] [2021-12-17 10:59:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:00,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 10:59:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 10:59:01,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675213440] [2021-12-17 10:59:01,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675213440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:01,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:01,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 10:59:01,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554168036] [2021-12-17 10:59:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:01,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 10:59:01,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 10:59:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 10:59:01,067 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 10:59:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:01,178 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-12-17 10:59:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 10:59:01,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-12-17 10:59:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:01,179 INFO L225 Difference]: With dead ends: 37 [2021-12-17 10:59:01,180 INFO L226 Difference]: Without dead ends: 33 [2021-12-17 10:59:01,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-17 10:59:01,181 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:01,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 118 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:59:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-17 10:59:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-17 10:59:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-17 10:59:01,186 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 30 [2021-12-17 10:59:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:01,187 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-17 10:59:01,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 10:59:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-17 10:59:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-17 10:59:01,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:01,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-17 10:59:01,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 10:59:01,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2142420270, now seen corresponding path program 1 times [2021-12-17 10:59:01,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554925393] [2021-12-17 10:59:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:01,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 10:59:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 10:59:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 10:59:01,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554925393] [2021-12-17 10:59:01,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554925393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:01,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:01,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 10:59:01,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681193757] [2021-12-17 10:59:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 10:59:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 10:59:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 10:59:01,384 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 10:59:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:01,564 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-12-17 10:59:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 10:59:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2021-12-17 10:59:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:01,570 INFO L225 Difference]: With dead ends: 46 [2021-12-17 10:59:01,571 INFO L226 Difference]: Without dead ends: 34 [2021-12-17 10:59:01,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 10:59:01,573 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:01,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:59:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-17 10:59:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-12-17 10:59:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-17 10:59:01,595 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 37 [2021-12-17 10:59:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:01,595 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-17 10:59:01,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 10:59:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-17 10:59:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 10:59:01,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:01,597 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:01,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 10:59:01,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:01,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 874062527, now seen corresponding path program 1 times [2021-12-17 10:59:01,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:01,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996235553] [2021-12-17 10:59:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:01,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 10:59:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 10:59:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 10:59:01,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:01,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996235553] [2021-12-17 10:59:01,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996235553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:59:01,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973702428] [2021-12-17 10:59:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:01,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:59:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:59:01,717 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) [2021-12-17 10:59:01,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 10:59:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:01,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 10:59:01,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:01,896 INFO L388 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 7 treesize of output 6 [2021-12-17 10:59:03,934 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1| Int)) (= (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1|) ((as const (Array Int Int)) 0))) is different from true [2021-12-17 10:59:04,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 54 [2021-12-17 10:59:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 10:59:04,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:59:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973702428] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:59:08,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 10:59:08,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-12-17 10:59:08,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263475251] [2021-12-17 10:59:08,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 10:59:08,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 10:59:08,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 10:59:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=54, Unknown=2, NotChecked=14, Total=90 [2021-12-17 10:59:08,228 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 10:59:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:08,301 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-12-17 10:59:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 10:59:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 40 [2021-12-17 10:59:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:08,303 INFO L225 Difference]: With dead ends: 59 [2021-12-17 10:59:08,303 INFO L226 Difference]: Without dead ends: 39 [2021-12-17 10:59:08,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=41, Invalid=93, Unknown=2, NotChecked=20, Total=156 [2021-12-17 10:59:08,305 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:08,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2021-12-17 10:59:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-17 10:59:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-12-17 10:59:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-12-17 10:59:08,311 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 40 [2021-12-17 10:59:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:08,311 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-12-17 10:59:08,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 10:59:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-12-17 10:59:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 10:59:08,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:08,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:08,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 10:59:08,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:59:08,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1296764353, now seen corresponding path program 1 times [2021-12-17 10:59:08,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:59:08,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692528589] [2021-12-17 10:59:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:08,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:59:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 10:59:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 10:59:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 10:59:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 10:59:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 10:59:08,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:59:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692528589] [2021-12-17 10:59:08,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692528589] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:59:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434221613] [2021-12-17 10:59:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:08,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:59:08,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:59:08,629 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) [2021-12-17 10:59:08,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 10:59:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:08,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-17 10:59:08,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 10:59:08,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:59:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 10:59:09,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434221613] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:59:09,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:59:09,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-12-17 10:59:09,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823023124] [2021-12-17 10:59:09,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:59:09,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 10:59:09,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:59:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 10:59:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 10:59:09,057 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 10:59:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:09,150 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-17 10:59:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 10:59:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-12-17 10:59:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:09,151 INFO L225 Difference]: With dead ends: 40 [2021-12-17 10:59:09,151 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 10:59:09,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-17 10:59:09,152 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:09,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 124 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:59:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 10:59:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 10:59:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-17 10:59:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 10:59:09,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-12-17 10:59:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:09,153 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 10:59:09,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 10:59:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 10:59:09,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 10:59:09,155 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 10:59:09,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 10:59:09,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-17 10:59:09,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 10:59:09,692 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 10:59:09,692 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0)) (.cse9 (select |#memory_int| |ULTIMATE.start_check_~a#1.base|)) (.cse10 (* |ULTIMATE.start_check_~i~0#1| 4))) (let ((.cse0 (= 0 (select .cse9 (+ (* |ULTIMATE.start_check_~x#1| 4) |ULTIMATE.start_check_~a#1.offset| .cse10)))) (.cse2 (= (select .cse9 (+ |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~y#1| 4) .cse10)) 0)) (.cse3 (<= |ULTIMATE.start_lcp_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_~l~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~l~0#1|)))) (.cse5 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse1)) (.cse7 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse8 (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse1))) (or (and .cse0 (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse1) .cse2 .cse3 (or (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|))) .cse4 .cse5 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse6 .cse7 .cse8) (and .cse0 (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_check_~l#1| 0) .cse4 .cse5 .cse6 (= |ULTIMATE.start_lcp_#res#1| 0) .cse7 (or (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~y#1|) (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~x#1|)) .cse8)))) [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L854 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse0 (<= |ULTIMATE.start_lcp_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_~l~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~l~0#1|)))) (.cse2 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse6)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse5 (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse6))) (or (and (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_lcp_#res#1| 0) .cse4 .cse5) (and (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse6) .cse0 .cse1 .cse2 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse3 .cse4 .cse5)))) [2021-12-17 10:59:09,693 INFO L861 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-12-17 10:59:09,693 INFO L861 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L854 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: false [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 10:59:09,693 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse9 ((as const (Array Int Int)) 0)) (.cse10 (select |#memory_int| |ULTIMATE.start_check_~a#1.base|)) (.cse11 (* |ULTIMATE.start_check_~i~0#1| 4))) (let ((.cse2 (= 0 (select .cse10 (+ (* |ULTIMATE.start_check_~x#1| 4) |ULTIMATE.start_check_~a#1.offset| .cse11)))) (.cse3 (= (select .cse10 (+ |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~y#1| 4) .cse11)) 0)) (.cse4 (<= |ULTIMATE.start_lcp_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_~l~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~l~0#1|)))) (.cse6 (= |ULTIMATE.start_check_#t~mem11#1| |ULTIMATE.start_check_#t~mem10#1|)) (.cse0 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse9)) (.cse1 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse8 (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse9))) (or (and (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse0 (= |ULTIMATE.start_lcp_#res#1| 0) .cse1 (or (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~y#1|) (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~x#1|)) .cse2 .cse3 .cse4 (= |ULTIMATE.start_check_~l#1| 0) .cse5 .cse6 .cse7 .cse8) (and .cse2 (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse9) .cse3 .cse4 (or (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|))) .cse5 .cse6 .cse0 .cse7 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse1 .cse8)))) [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse0) (<= |ULTIMATE.start_lcp_~y#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0))) [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse0) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0))) [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 14) the Hoare annotation is: true [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-17 10:59:09,694 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-17 10:59:09,695 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 12 14) no Hoare annotation was computed. [2021-12-17 10:59:09,695 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 14) no Hoare annotation was computed. [2021-12-17 10:59:09,695 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-17 10:59:09,697 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 10:59:09,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 10:59:09,701 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-17 10:59:09,712 INFO L158 Benchmark]: Toolchain (without parser) took 10231.38ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 72.4MB in the beginning and 89.1MB in the end (delta: -16.7MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2021-12-17 10:59:09,712 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 10:59:09,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.73ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 77.0MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 10:59:09,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.63ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 75.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 10:59:09,712 INFO L158 Benchmark]: Boogie Preprocessor took 28.50ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 74.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 10:59:09,713 INFO L158 Benchmark]: RCFGBuilder took 327.31ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 62.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 10:59:09,713 INFO L158 Benchmark]: TraceAbstraction took 9549.63ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 61.8MB in the beginning and 89.1MB in the end (delta: -27.3MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2021-12-17 10:59:09,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.73ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 77.0MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.63ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 75.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.50ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 74.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.31ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 62.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9549.63ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 61.8MB in the beginning and 89.1MB in the end (delta: -27.3MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 593 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 265 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 165 mSDtfsCounter, 265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 26 PreInvPairs, 37 NumberOfFragments, 476 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 444 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 316 ConstructedInterpolants, 4 QuantifiedInterpolants, 1221 SizeOfPredicates, 33 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 125/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-17 10:59:09,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/lcp.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 10:59:11,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 10:59:11,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 10:59:11,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 10:59:11,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 10:59:11,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 10:59:11,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 10:59:11,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 10:59:11,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 10:59:11,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 10:59:11,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 10:59:11,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 10:59:11,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 10:59:11,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 10:59:11,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 10:59:11,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 10:59:11,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 10:59:11,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 10:59:11,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 10:59:11,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 10:59:11,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 10:59:11,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 10:59:11,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 10:59:11,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 10:59:11,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 10:59:11,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 10:59:11,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 10:59:11,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 10:59:11,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 10:59:11,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 10:59:11,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 10:59:11,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 10:59:11,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 10:59:11,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 10:59:11,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 10:59:11,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 10:59:11,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 10:59:11,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 10:59:11,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 10:59:11,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 10:59:11,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 10:59:11,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 10:59:11,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 10:59:11,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 10:59:11,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 10:59:11,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 10:59:11,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 10:59:11,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 10:59:11,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 10:59:11,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 10:59:11,533 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 10:59:11,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 10:59:11,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 10:59:11,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 10:59:11,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 10:59:11,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 10:59:11,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 10:59:11,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:59:11,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 10:59:11,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 10:59:11,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 10:59:11,537 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 10:59:11,537 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 10:59:11,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 10:59:11,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 10:59:11,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 10:59:11,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 10:59:11,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 10:59:11,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2021-12-17 10:59:11,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 10:59:11,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 10:59:11,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 10:59:11,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 10:59:11,822 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 10:59:11,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-12-17 10:59:11,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f04fe7/978f68aef2734127a043af6479216dda/FLAG9d2461003 [2021-12-17 10:59:12,267 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 10:59:12,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-12-17 10:59:12,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f04fe7/978f68aef2734127a043af6479216dda/FLAG9d2461003 [2021-12-17 10:59:12,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f04fe7/978f68aef2734127a043af6479216dda [2021-12-17 10:59:12,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 10:59:12,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 10:59:12,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 10:59:12,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 10:59:12,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 10:59:12,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4834659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12, skipping insertion in model container [2021-12-17 10:59:12,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 10:59:12,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 10:59:12,465 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/verifythis/lcp.c[515,528] [2021-12-17 10:59:12,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:59:12,533 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 10:59:12,546 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/verifythis/lcp.c[515,528] [2021-12-17 10:59:12,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:59:12,581 INFO L208 MainTranslator]: Completed translation [2021-12-17 10:59:12,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12 WrapperNode [2021-12-17 10:59:12,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 10:59:12,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 10:59:12,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 10:59:12,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 10:59:12,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,628 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2021-12-17 10:59:12,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 10:59:12,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 10:59:12,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 10:59:12,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 10:59:12,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 10:59:12,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 10:59:12,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 10:59:12,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 10:59:12,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (1/1) ... [2021-12-17 10:59:12,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:59:12,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:59:12,687 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) [2021-12-17 10:59:12,690 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 [2021-12-17 10:59:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 10:59:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 10:59:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 10:59:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 10:59:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 10:59:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-17 10:59:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 10:59:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 10:59:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 10:59:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 10:59:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 10:59:12,818 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 10:59:12,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 10:59:12,981 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 10:59:12,986 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 10:59:12,987 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 10:59:12,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:12 BoogieIcfgContainer [2021-12-17 10:59:12,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 10:59:12,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 10:59:12,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 10:59:12,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 10:59:12,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:59:12" (1/3) ... [2021-12-17 10:59:12,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:12, skipping insertion in model container [2021-12-17 10:59:12,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:59:12" (2/3) ... [2021-12-17 10:59:12,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:59:12, skipping insertion in model container [2021-12-17 10:59:12,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:59:12" (3/3) ... [2021-12-17 10:59:12,995 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-12-17 10:59:13,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 10:59:13,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 10:59:13,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 10:59:13,060 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 10:59:13,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 10:59:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 10:59:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 10:59:13,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:13,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:13,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash 867982546, now seen corresponding path program 1 times [2021-12-17 10:59:13,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 10:59:13,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971340411] [2021-12-17 10:59:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:13,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 10:59:13,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 10:59:13,093 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) [2021-12-17 10:59:13,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 10:59:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:13,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 10:59:13,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 10:59:13,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 10:59:13,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 10:59:13,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971340411] [2021-12-17 10:59:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971340411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:13,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 10:59:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380544569] [2021-12-17 10:59:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:13,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 10:59:13,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 10:59:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 10:59:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:59:13,309 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:13,325 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2021-12-17 10:59:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 10:59:13,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-17 10:59:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:13,333 INFO L225 Difference]: With dead ends: 63 [2021-12-17 10:59:13,333 INFO L226 Difference]: Without dead ends: 28 [2021-12-17 10:59:13,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:59:13,339 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:13,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:59:13,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-17 10:59:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-17 10:59:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-17 10:59:13,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2021-12-17 10:59:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:13,364 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-17 10:59:13,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-17 10:59:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 10:59:13,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:13,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:13,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 10:59:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 10:59:13,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1785702985, now seen corresponding path program 1 times [2021-12-17 10:59:13,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 10:59:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555879844] [2021-12-17 10:59:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:13,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 10:59:13,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 10:59:13,580 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) [2021-12-17 10:59:13,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 10:59:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:13,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 10:59:13,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 10:59:13,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 10:59:13,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 10:59:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555879844] [2021-12-17 10:59:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555879844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:59:13,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:59:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 10:59:13,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790856736] [2021-12-17 10:59:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:59:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 10:59:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 10:59:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 10:59:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 10:59:13,839 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:13,946 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-17 10:59:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 10:59:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-17 10:59:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:13,947 INFO L225 Difference]: With dead ends: 45 [2021-12-17 10:59:13,948 INFO L226 Difference]: Without dead ends: 31 [2021-12-17 10:59:13,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-17 10:59:13,949 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:13,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:59:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-17 10:59:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-17 10:59:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 10:59:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-17 10:59:13,955 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2021-12-17 10:59:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:13,956 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-17 10:59:13,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 10:59:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-17 10:59:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-17 10:59:13,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:13,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:13,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 10:59:14,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 10:59:14,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -964575686, now seen corresponding path program 1 times [2021-12-17 10:59:14,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 10:59:14,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385584037] [2021-12-17 10:59:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:14,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 10:59:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 10:59:14,167 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) [2021-12-17 10:59:14,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-17 10:59:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:14,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-17 10:59:14,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:14,819 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-12-17 10:59:14,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 16 [2021-12-17 10:59:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 10:59:14,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:59:19,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 10:59:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385584037] [2021-12-17 10:59:19,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385584037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:59:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1146029940] [2021-12-17 10:59:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:19,342 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-17 10:59:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-17 10:59:19,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-17 10:59:19,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-12-17 10:59:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:19,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 10:59:19,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:59:19,485 INFO L354 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2021-12-17 10:59:19,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-17 10:59:23,808 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 10:59:23,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 68 [2021-12-17 10:59:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 10:59:23,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:59:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1146029940] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:59:29,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 10:59:29,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 21 [2021-12-17 10:59:29,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145847497] [2021-12-17 10:59:29,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 10:59:29,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 10:59:29,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 10:59:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 10:59:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=631, Unknown=5, NotChecked=0, Total=702 [2021-12-17 10:59:29,135 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 10:59:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:59:57,276 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-17 10:59:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 10:59:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 33 [2021-12-17 10:59:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:59:57,278 INFO L225 Difference]: With dead ends: 71 [2021-12-17 10:59:57,278 INFO L226 Difference]: Without dead ends: 53 [2021-12-17 10:59:57,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=273, Invalid=1782, Unknown=15, NotChecked=0, Total=2070 [2021-12-17 10:59:57,280 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 10:59:57,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 231 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 379 Invalid, 0 Unknown, 20 Unchecked, 0.5s Time] [2021-12-17 10:59:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-17 10:59:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-12-17 10:59:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 10:59:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-12-17 10:59:57,287 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 33 [2021-12-17 10:59:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:59:57,287 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-12-17 10:59:57,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 10:59:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-12-17 10:59:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 10:59:57,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:59:57,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:59:57,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-12-17 10:59:57,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-17 10:59:57,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 10:59:57,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:59:57,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:59:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash -436474905, now seen corresponding path program 1 times [2021-12-17 10:59:57,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 10:59:57,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202460984] [2021-12-17 10:59:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:59:57,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 10:59:57,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 10:59:57,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 10:59:57,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-17 10:59:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:59:57,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-17 10:59:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:00,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 11:00:00,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 11:00:01,108 INFO L354 Elim1Store]: treesize reduction 124, result has 41.8 percent of original size [2021-12-17 11:00:01,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 101 [2021-12-17 11:00:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 11:00:01,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:00:06,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:00:06,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202460984] [2021-12-17 11:00:06,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202460984] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 11:00:06,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [434380027] [2021-12-17 11:00:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:00:06,098 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-17 11:00:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-17 11:00:06,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-17 11:00:06,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-12-17 11:00:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 11:00:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 11:00:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:06,196 INFO L388 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 7 treesize of output 6 [2021-12-17 11:00:08,365 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2| (_ BitVec 32))) (= (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2|) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2021-12-17 11:00:10,557 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_3| (_ BitVec 32))) (= (select |c_#memory_int| |v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_3|) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2021-12-17 11:00:10,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-12-17 11:00:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2021-12-17 11:00:10,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:00:19,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [434380027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 11:00:19,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 11:00:19,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 27 [2021-12-17 11:00:19,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540271653] [2021-12-17 11:00:19,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 11:00:19,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-17 11:00:19,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:00:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-17 11:00:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=8, NotChecked=114, Total=992 [2021-12-17 11:00:19,023 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-17 11:00:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:00:30,322 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-12-17 11:00:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 11:00:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 36 [2021-12-17 11:00:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:00:30,324 INFO L225 Difference]: With dead ends: 68 [2021-12-17 11:00:30,324 INFO L226 Difference]: Without dead ends: 66 [2021-12-17 11:00:30,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=8, NotChecked=182, Total=2352 [2021-12-17 11:00:30,327 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 11:00:30,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 438 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 345 Unchecked, 0.5s Time] [2021-12-17 11:00:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-17 11:00:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2021-12-17 11:00:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 11:00:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-12-17 11:00:30,350 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 36 [2021-12-17 11:00:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:00:30,351 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-12-17 11:00:30,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-17 11:00:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-12-17 11:00:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 11:00:30,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:00:30,352 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:00:30,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-12-17 11:00:30,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-17 11:00:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 11:00:30,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:00:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:00:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2024822807, now seen corresponding path program 2 times [2021-12-17 11:00:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 11:00:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106511596] [2021-12-17 11:00:30,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 11:00:30,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 11:00:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 11:00:30,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 11:00:30,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-17 11:00:30,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 11:00:30,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 11:00:30,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 11:00:30,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 11:00:30,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 11:00:30,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:00:30,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106511596] [2021-12-17 11:00:30,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106511596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 11:00:30,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 11:00:30,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 11:00:30,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568619593] [2021-12-17 11:00:30,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 11:00:30,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 11:00:30,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:00:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 11:00:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 11:00:30,871 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 11:00:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:00:30,887 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2021-12-17 11:00:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 11:00:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-17 11:00:30,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:00:30,889 INFO L225 Difference]: With dead ends: 93 [2021-12-17 11:00:30,889 INFO L226 Difference]: Without dead ends: 55 [2021-12-17 11:00:30,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 11:00:30,890 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 11:00:30,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 11:00:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-17 11:00:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-12-17 11:00:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 44 states have internal predecessors, (46), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 11:00:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-12-17 11:00:30,901 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2021-12-17 11:00:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:00:30,901 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-12-17 11:00:30,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 11:00:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-12-17 11:00:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-17 11:00:30,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:00:30,902 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:00:30,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-17 11:00:31,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 11:00:31,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:00:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:00:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1337034520, now seen corresponding path program 3 times [2021-12-17 11:00:31,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 11:00:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543061218] [2021-12-17 11:00:31,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 11:00:31,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 11:00:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 11:00:31,110 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 11:00:31,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-17 11:00:31,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-17 11:00:31,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 11:00:31,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 11:00:31,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:31,182 INFO L388 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 7 treesize of output 6 [2021-12-17 11:00:33,205 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3| (_ BitVec 32))) (= (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3|) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2021-12-17 11:00:35,275 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_4| (_ BitVec 32))) (= (select |c_#memory_int| |v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_4|) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2021-12-17 11:00:35,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-12-17 11:00:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 4 not checked. [2021-12-17 11:00:35,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:00:37,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:00:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543061218] [2021-12-17 11:00:37,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543061218] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 11:00:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [14991018] [2021-12-17 11:00:37,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 11:00:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-17 11:00:37,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-17 11:00:37,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-17 11:00:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-12-17 11:00:37,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-17 11:00:37,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 11:00:37,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-17 11:00:37,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:37,576 INFO L354 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2021-12-17 11:00:37,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-17 11:00:43,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 11:00:43,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2021-12-17 11:00:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 11:00:43,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 11:00:43,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [14991018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 11:00:43,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 11:00:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2021-12-17 11:00:43,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886653701] [2021-12-17 11:00:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 11:00:43,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 11:00:43,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:00:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 11:00:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=226, Unknown=4, NotChecked=62, Total=342 [2021-12-17 11:00:43,961 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 11:00:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:00:44,119 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-12-17 11:00:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 11:00:44,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2021-12-17 11:00:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:00:44,124 INFO L225 Difference]: With dead ends: 61 [2021-12-17 11:00:44,124 INFO L226 Difference]: Without dead ends: 57 [2021-12-17 11:00:44,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=82, Invalid=342, Unknown=4, NotChecked=78, Total=506 [2021-12-17 11:00:44,125 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 11:00:44,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 149 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2021-12-17 11:00:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-17 11:00:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-12-17 11:00:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 11:00:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-12-17 11:00:44,130 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-12-17 11:00:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:00:44,130 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-12-17 11:00:44,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 11:00:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-12-17 11:00:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 11:00:44,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:00:44,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:00:44,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-17 11:00:44,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-12-17 11:00:44,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-17 11:00:44,536 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:00:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:00:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1296764353, now seen corresponding path program 1 times [2021-12-17 11:00:44,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 11:00:44,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212434225] [2021-12-17 11:00:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:00:44,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 11:00:44,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 11:00:44,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 11:00:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-17 11:00:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 11:00:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-17 11:00:44,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 11:00:45,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:00:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 11:00:47,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:00:47,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212434225] [2021-12-17 11:00:47,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212434225] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 11:00:47,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 11:00:47,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2021-12-17 11:00:47,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884012984] [2021-12-17 11:00:47,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 11:00:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-17 11:00:47,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:00:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-17 11:00:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-12-17 11:00:47,287 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 11:00:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:00:53,627 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-12-17 11:00:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 11:00:53,628 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 40 [2021-12-17 11:00:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:00:53,629 INFO L225 Difference]: With dead ends: 80 [2021-12-17 11:00:53,629 INFO L226 Difference]: Without dead ends: 51 [2021-12-17 11:00:53,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=373, Invalid=1187, Unknown=0, NotChecked=0, Total=1560 [2021-12-17 11:00:53,630 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 78 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 11:00:53,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 230 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 11:00:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-17 11:00:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-12-17 11:00:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 11:00:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-12-17 11:00:53,635 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 40 [2021-12-17 11:00:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:00:53,635 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-12-17 11:00:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 11:00:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-12-17 11:00:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 11:00:53,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:00:53,636 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2021-12-17 11:00:53,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-17 11:00:53,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 11:00:53,841 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:00:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:00:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1272141330, now seen corresponding path program 2 times [2021-12-17 11:00:53,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 11:00:53,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220473432] [2021-12-17 11:00:53,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 11:00:53,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 11:00:53,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 11:00:53,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 11:00:53,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-17 11:00:53,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 11:00:53,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 11:00:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-17 11:00:53,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:00:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 11:00:55,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:00:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 11:00:58,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:00:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220473432] [2021-12-17 11:00:58,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220473432] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 11:00:58,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 11:00:58,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2021-12-17 11:00:58,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608908011] [2021-12-17 11:00:58,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 11:00:58,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 11:00:58,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:00:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 11:00:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2021-12-17 11:00:58,893 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 11:01:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:01:40,647 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-17 11:01:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-17 11:01:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2021-12-17 11:01:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:01:40,648 INFO L225 Difference]: With dead ends: 122 [2021-12-17 11:01:40,648 INFO L226 Difference]: Without dead ends: 69 [2021-12-17 11:01:40,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=1012, Invalid=3410, Unknown=0, NotChecked=0, Total=4422 [2021-12-17 11:01:40,651 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 193 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 11:01:40,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 269 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 11:01:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-17 11:01:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-12-17 11:01:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 11:01:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-12-17 11:01:40,657 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 49 [2021-12-17 11:01:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:01:40,657 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-12-17 11:01:40,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-17 11:01:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-12-17 11:01:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 11:01:40,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:01:40,658 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2021-12-17 11:01:40,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-17 11:01:40,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 11:01:40,867 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:01:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:01:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2075652366, now seen corresponding path program 3 times [2021-12-17 11:01:40,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 11:01:40,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212046964] [2021-12-17 11:01:40,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 11:01:40,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 11:01:40,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 11:01:40,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 11:01:40,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-17 11:01:41,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-17 11:01:41,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 11:01:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-17 11:01:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:01:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-17 11:01:41,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:01:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-17 11:01:44,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 11:01:44,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212046964] [2021-12-17 11:01:44,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212046964] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 11:01:44,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 11:01:44,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-17 11:01:44,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867921746] [2021-12-17 11:01:44,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 11:01:44,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 11:01:44,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 11:01:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 11:01:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-17 11:01:44,440 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-17 11:01:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:01:45,347 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-12-17 11:01:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 11:01:45,349 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 67 [2021-12-17 11:01:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:01:45,349 INFO L225 Difference]: With dead ends: 68 [2021-12-17 11:01:45,349 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 11:01:45,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-12-17 11:01:45,350 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 11:01:45,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 123 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 12 Unchecked, 0.3s Time] [2021-12-17 11:01:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 11:01:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 11:01:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-17 11:01:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 11:01:45,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2021-12-17 11:01:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:01:45,351 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 11:01:45,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-17 11:01:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 11:01:45,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 11:01:45,353 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 11:01:45,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-17 11:01:45,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 11:01:45,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 11:02:06,514 WARN L227 SmtUtils]: Spent 18.72s on a formula simplification. DAG size of input: 139 DAG size of output: 34 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-17 11:02:13,509 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 11:02:13,509 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (or (and (= |ULTIMATE.start_lcp_~l~0#1| (_ bv0 32)) (= |ULTIMATE.start_check_~l#1| (_ bv0 32)) (= |ULTIMATE.start_lcp_#res#1| (_ bv0 32))) (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (or (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|))) (or (not (bvslt (bvadd |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~n#1|)) (not (bvslt (bvadd |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|) |ULTIMATE.start_check_~n#1|))) (bvsge |ULTIMATE.start_main_~y~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (= (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) .cse0) (or (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|))) (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~x~0#1| (_ bv0 32))))) [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L854 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (or (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (or (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|))) (bvsge |ULTIMATE.start_main_~y~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (or (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|))) (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~x~0#1| (_ bv0 32)))) (and (= |ULTIMATE.start_lcp_~l~0#1| (_ bv0 32)) (= |ULTIMATE.start_lcp_#res#1| (_ bv0 32)))) [2021-12-17 11:02:13,510 INFO L861 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-12-17 11:02:13,510 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L854 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: false [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (or (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_#res#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|))) (or (not (bvslt (bvadd |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~n#1|)) (not (bvslt (bvadd |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|) |ULTIMATE.start_check_~n#1|))) (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) (or (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~n~0#1|)) (not (bvslt (bvadd |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~n~0#1|))) (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvsge |ULTIMATE.start_main_~x~0#1| (_ bv0 32)) (bvsge |ULTIMATE.start_main_~y~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) (exists ((|ULTIMATE.start_check_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_check_~x#1| (_ BitVec 32)) (|ULTIMATE.start_check_~a#1.offset| (_ BitVec 32)) (|ULTIMATE.start_check_~y#1| (_ BitVec 32))) (let ((.cse1 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32))) (.cse2 (bvmul |ULTIMATE.start_check_~i~0#1| (_ bv4 32)))) (and (= |ULTIMATE.start_check_#t~mem11#1| (select .cse1 (bvadd .cse2 |ULTIMATE.start_check_~a#1.offset| (bvmul |ULTIMATE.start_check_~y#1| (_ bv4 32))))) (= |ULTIMATE.start_check_#t~mem10#1| (select .cse1 (bvadd .cse2 (bvmul |ULTIMATE.start_check_~x#1| (_ bv4 32)) |ULTIMATE.start_check_~a#1.offset|)))))) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (= (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) .cse0) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0))) [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-12-17 11:02:13,510 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (bvsge |ULTIMATE.start_main_~y~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_lcp_~y#1| |ULTIMATE.start_main_~y~0#1|) (= (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (= |ULTIMATE.start_lcp_~n#1| |ULTIMATE.start_main_~n~0#1|) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0) (bvsge |ULTIMATE.start_main_~x~0#1| (_ bv0 32)))) [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv0 32)) (= (select (select |#memory_int| (_ bv2 32)) (_ bv5 32)) ((_ sign_extend 24) (_ bv0 8))) (= (_ bv0 32) |ULTIMATE.start_main_#t~malloc15#1.offset|) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|) .cse0) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (= (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse0))) [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 14) the Hoare annotation is: true [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 12 14) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 14) no Hoare annotation was computed. [2021-12-17 11:02:13,511 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-17 11:02:13,513 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1] [2021-12-17 11:02:13,514 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 11:02:13,518 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-17 11:02:13,521 INFO L158 Benchmark]: Toolchain (without parser) took 181232.60ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 36.2MB in the beginning and 62.4MB in the end (delta: -26.2MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-12-17 11:02:13,522 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.2MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 11:02:13,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.95ms. Allocated memory is still 60.8MB. Free memory was 36.0MB in the beginning and 43.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 11:02:13,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.94ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 41.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 11:02:13,522 INFO L158 Benchmark]: Boogie Preprocessor took 35.68ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 11:02:13,523 INFO L158 Benchmark]: RCFGBuilder took 323.50ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 27.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 11:02:13,523 INFO L158 Benchmark]: TraceAbstraction took 180530.50ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 27.4MB in the beginning and 62.4MB in the end (delta: -35.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-17 11:02:13,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.2MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.95ms. Allocated memory is still 60.8MB. Free memory was 36.0MB in the beginning and 43.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.94ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 41.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.68ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 323.50ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 27.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 180530.50ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 27.4MB in the beginning and 62.4MB in the end (delta: -35.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 180.5s, OverallIterations: 9, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 88.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 27.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 460 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 1661 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 404 IncrementalHoareTripleChecker+Unchecked, 1438 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1688 IncrementalHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 223 mSDtfsCounter, 1688 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 760 GetRequests, 500 SyntacticMatches, 14 SemanticMatches, 246 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 133.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=8, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 48 PreInvPairs, 86 NumberOfFragments, 361 HoareAnnotationTreeSize, 48 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 8233 FormulaSimplificationTreeSizeReductionInter, 27.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 59.7s InterpolantComputationTime, 466 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 607 ConstructedInterpolants, 71 QuantifiedInterpolants, 6336 SizeOfPredicates, 192 NumberOfNonLiveVariables, 1283 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 518/657 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-17 11:02:13,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias