./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:21:46,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:21:46,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:21:46,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:21:46,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:21:46,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:21:46,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:21:46,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:21:46,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:21:46,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:21:46,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:21:46,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:21:46,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:21:46,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:21:46,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:21:46,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:21:46,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:21:46,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:21:46,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:21:46,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:21:46,789 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:21:46,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:21:46,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:21:46,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:21:46,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:21:46,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:21:46,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:21:46,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:21:46,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:21:46,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:21:46,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:21:46,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:21:46,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:21:46,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:21:46,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:21:46,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:21:46,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:21:46,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:21:46,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:21:46,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:21:46,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:21:46,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:21:46,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:21:46,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:21:46,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:21:46,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:21:46,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:21:46,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:21:46,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:21:46,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:21:46,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:21:46,832 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:21:46,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:21:46,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:21:46,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:21:46,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:21:46,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:21:46,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:21:46,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:21:46,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:21:46,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:21:46,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:21:46,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:21:46,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:21:46,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2022-07-12 05:21:47,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:21:47,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:21:47,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:21:47,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:21:47,058 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:21:47,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2022-07-12 05:21:47,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be198bc35/b5f6284813ce4894840083a0ae1ffc9e/FLAG03764b60d [2022-07-12 05:21:47,445 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:21:47,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2022-07-12 05:21:47,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be198bc35/b5f6284813ce4894840083a0ae1ffc9e/FLAG03764b60d [2022-07-12 05:21:47,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be198bc35/b5f6284813ce4894840083a0ae1ffc9e [2022-07-12 05:21:47,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:21:47,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:21:47,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:21:47,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:21:47,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:21:47,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c3496f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47, skipping insertion in model container [2022-07-12 05:21:47,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:21:47,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:21:47,629 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/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2022-07-12 05:21:47,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:21:47,647 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:21:47,657 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/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2022-07-12 05:21:47,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:21:47,671 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:21:47,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47 WrapperNode [2022-07-12 05:21:47,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:21:47,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:21:47,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:21:47,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:21:47,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,696 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-12 05:21:47,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:21:47,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:21:47,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:21:47,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:21:47,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:21:47,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:21:47,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:21:47,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:21:47,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (1/1) ... [2022-07-12 05:21:47,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:21:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:21:47,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:21:47,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:21:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:21:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 05:21:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 05:21:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:21:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:21:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:21:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 05:21:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 05:21:47,830 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:21:47,831 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:21:47,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:21:47,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:21:47,910 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:21:47,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:21:47 BoogieIcfgContainer [2022-07-12 05:21:47,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:21:47,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:21:47,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:21:47,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:21:47,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:21:47" (1/3) ... [2022-07-12 05:21:47,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4203ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:21:47, skipping insertion in model container [2022-07-12 05:21:47,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:21:47" (2/3) ... [2022-07-12 05:21:47,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4203ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:21:47, skipping insertion in model container [2022-07-12 05:21:47,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:21:47" (3/3) ... [2022-07-12 05:21:47,916 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2022-07-12 05:21:47,925 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:21:47,925 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:21:47,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:21:47,980 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1aecfc6e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68aa16e1 [2022-07-12 05:21:47,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:21:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-07-12 05:21:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 05:21:47,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:21:47,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:21:47,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:21:48,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:21:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2022-07-12 05:21:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:21:48,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165495854] [2022-07-12 05:21:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:21:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:21:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:21:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:21:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:21:48,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:21:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165495854] [2022-07-12 05:21:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165495854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:21:48,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:21:48,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 05:21:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621580281] [2022-07-12 05:21:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:21:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 05:21:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:21:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 05:21:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 05:21:48,201 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-07-12 05:21:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:21:48,217 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-07-12 05:21:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 05:21:48,220 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 24 [2022-07-12 05:21:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:21:48,224 INFO L225 Difference]: With dead ends: 51 [2022-07-12 05:21:48,224 INFO L226 Difference]: Without dead ends: 23 [2022-07-12 05:21:48,227 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:21:48,231 INFO L413 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:21:48,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:21:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-12 05:21:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-12 05:21:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-07-12 05:21:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-12 05:21:48,257 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2022-07-12 05:21:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:21:48,257 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-12 05:21:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-07-12 05:21:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-12 05:21:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 05:21:48,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:21:48,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:21:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 05:21:48,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:21:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:21:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2022-07-12 05:21:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:21:48,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923902597] [2022-07-12 05:21:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:21:48,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:21:48,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086296868] [2022-07-12 05:21:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:48,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:21:48,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:21:48,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:21:48,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:21:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 05:21:48,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:21:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:21:48,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:21:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:21:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923902597] [2022-07-12 05:21:48,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:21:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086296868] [2022-07-12 05:21:48,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086296868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:21:48,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:21:48,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 05:21:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129421843] [2022-07-12 05:21:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:21:48,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:21:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:21:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:21:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 05:21:48,407 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 05:21:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:21:48,472 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-07-12 05:21:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:21:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-12 05:21:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:21:48,474 INFO L225 Difference]: With dead ends: 35 [2022-07-12 05:21:48,474 INFO L226 Difference]: Without dead ends: 33 [2022-07-12 05:21:48,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:21:48,476 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:21:48,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:21:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-12 05:21:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-07-12 05:21:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 05:21:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-12 05:21:48,493 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-07-12 05:21:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:21:48,493 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-12 05:21:48,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 05:21:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-12 05:21:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 05:21:48,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:21:48,494 INFO L195 NwaCegarLoop]: 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] [2022-07-12 05:21:48,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 05:21:48,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:21:48,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:21:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:21:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2022-07-12 05:21:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:21:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148396543] [2022-07-12 05:21:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:48,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:21:48,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:21:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473678956] [2022-07-12 05:21:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:48,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:21:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:21:48,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:21:48,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:21:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:48,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:21:48,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:21:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:21:48,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:21:48,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:21:48,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148396543] [2022-07-12 05:21:48,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:21:48,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473678956] [2022-07-12 05:21:48,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473678956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:21:48,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:21:48,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:21:48,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045362182] [2022-07-12 05:21:48,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:21:48,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:21:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:21:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:21:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:21:48,873 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 05:21:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:21:48,918 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-12 05:21:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:21:48,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-07-12 05:21:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:21:48,919 INFO L225 Difference]: With dead ends: 39 [2022-07-12 05:21:48,919 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 05:21:48,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:21:48,920 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:21:48,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:21:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 05:21:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-07-12 05:21:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 05:21:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-07-12 05:21:48,925 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2022-07-12 05:21:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:21:48,925 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-07-12 05:21:48,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 05:21:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-07-12 05:21:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 05:21:48,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:21:48,926 INFO L195 NwaCegarLoop]: 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] [2022-07-12 05:21:48,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 05:21:49,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 05:21:49,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:21:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:21:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2022-07-12 05:21:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:21:49,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214585770] [2022-07-12 05:21:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:21:49,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:21:49,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095376933] [2022-07-12 05:21:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:21:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:21:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:21:49,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:21:49,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:21:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:21:49,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 05:21:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:21:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:21:53,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:22:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:22:01,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:22:01,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214585770] [2022-07-12 05:22:01,667 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:22:01,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095376933] [2022-07-12 05:22:01,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095376933] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:22:01,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:22:01,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2022-07-12 05:22:01,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4945311] [2022-07-12 05:22:01,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 05:22:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:22:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:22:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:22:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=142, Unknown=2, NotChecked=0, Total=182 [2022-07-12 05:22:01,671 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 05:22:12,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 05:22:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:22:13,333 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-07-12 05:22:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 05:22:13,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-07-12 05:22:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:22:13,336 INFO L225 Difference]: With dead ends: 48 [2022-07-12 05:22:13,336 INFO L226 Difference]: Without dead ends: 46 [2022-07-12 05:22:13,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=79, Invalid=298, Unknown=3, NotChecked=0, Total=380 [2022-07-12 05:22:13,336 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:22:13,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 131 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:22:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-12 05:22:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-07-12 05:22:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 05:22:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-07-12 05:22:13,342 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33 [2022-07-12 05:22:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:22:13,342 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-07-12 05:22:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 05:22:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-07-12 05:22:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 05:22:13,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:22:13,350 INFO L195 NwaCegarLoop]: 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] [2022-07-12 05:22:13,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 05:22:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:13,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:22:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:22:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2022-07-12 05:22:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:22:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014387313] [2022-07-12 05:22:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:22:13,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:22:13,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624300537] [2022-07-12 05:22:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:22:13,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:22:13,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:22:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:22:13,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 05:22:13,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:22:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:22:14,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:22:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:22:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:22:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014387313] [2022-07-12 05:22:15,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:22:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624300537] [2022-07-12 05:22:15,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624300537] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:22:15,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:22:15,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-12 05:22:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47785676] [2022-07-12 05:22:15,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 05:22:15,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 05:22:15,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:22:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 05:22:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:22:15,194 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 05:22:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:22:15,912 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2022-07-12 05:22:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 05:22:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-07-12 05:22:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:22:15,914 INFO L225 Difference]: With dead ends: 79 [2022-07-12 05:22:15,914 INFO L226 Difference]: Without dead ends: 72 [2022-07-12 05:22:15,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:22:15,916 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:22:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 89 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 05:22:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-12 05:22:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-07-12 05:22:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.22) internal successors, (61), 53 states have internal predecessors, (61), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 05:22:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2022-07-12 05:22:15,935 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 33 [2022-07-12 05:22:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:22:15,936 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2022-07-12 05:22:15,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 05:22:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2022-07-12 05:22:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 05:22:15,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:22:15,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:22:15,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:22:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:16,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:22:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:22:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2022-07-12 05:22:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:22:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833845156] [2022-07-12 05:22:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:22:16,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:22:16,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286455692] [2022-07-12 05:22:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:22:16,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:22:16,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:22:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:22:16,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:22:16,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:22:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 05:22:16,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:22:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 05:22:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:22:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833845156] [2022-07-12 05:22:16,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:22:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286455692] [2022-07-12 05:22:16,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286455692] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:22:16,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:22:16,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-12 05:22:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542399516] [2022-07-12 05:22:16,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 05:22:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:22:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:22:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:22:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:22:16,368 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 05:22:18,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 05:22:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:22:18,444 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2022-07-12 05:22:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:22:18,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-07-12 05:22:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:22:18,447 INFO L225 Difference]: With dead ends: 76 [2022-07-12 05:22:18,447 INFO L226 Difference]: Without dead ends: 69 [2022-07-12 05:22:18,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:22:18,448 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:22:18,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 05:22:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-12 05:22:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-07-12 05:22:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 05:22:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2022-07-12 05:22:18,462 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 39 [2022-07-12 05:22:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:22:18,463 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2022-07-12 05:22:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 05:22:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2022-07-12 05:22:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 05:22:18,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:22:18,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:22:18,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 05:22:18,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:18,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:22:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:22:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times [2022-07-12 05:22:18,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:22:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992780935] [2022-07-12 05:22:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:18,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:22:18,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:22:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338248204] [2022-07-12 05:22:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:18,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:22:18,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:22:18,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:22:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:22:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 05:22:18,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:22:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:22:18,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:22:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:22:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:22:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992780935] [2022-07-12 05:22:19,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:22:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338248204] [2022-07-12 05:22:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338248204] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:22:19,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:22:19,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-07-12 05:22:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507098531] [2022-07-12 05:22:19,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 05:22:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 05:22:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:22:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 05:22:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:22:19,230 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-12 05:22:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:22:19,443 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-07-12 05:22:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:22:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 51 [2022-07-12 05:22:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:22:19,445 INFO L225 Difference]: With dead ends: 100 [2022-07-12 05:22:19,445 INFO L226 Difference]: Without dead ends: 65 [2022-07-12 05:22:19,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-07-12 05:22:19,447 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:22:19,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 107 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:22:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-12 05:22:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-07-12 05:22:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 48 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 05:22:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2022-07-12 05:22:19,461 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 51 [2022-07-12 05:22:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:22:19,463 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2022-07-12 05:22:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-12 05:22:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2022-07-12 05:22:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 05:22:19,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:22:19,466 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:22:19,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 05:22:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:19,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:22:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:22:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1217167219, now seen corresponding path program 2 times [2022-07-12 05:22:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:22:19,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806899321] [2022-07-12 05:22:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:22:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:22:19,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 05:22:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590105721] [2022-07-12 05:22:19,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 05:22:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:22:19,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:22:19,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:22:19,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 05:22:19,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 05:22:19,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 05:22:19,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:22:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:22:19,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:22:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:22:20,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:22:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806899321] [2022-07-12 05:22:20,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 05:22:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590105721] [2022-07-12 05:22:20,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590105721] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:22:20,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:22:20,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-07-12 05:22:20,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138627135] [2022-07-12 05:22:20,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 05:22:20,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 05:22:20,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:22:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 05:22:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:22:20,677 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-07-12 05:22:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:22:20,994 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-07-12 05:22:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 05:22:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 51 [2022-07-12 05:22:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:22:20,996 INFO L225 Difference]: With dead ends: 69 [2022-07-12 05:22:20,996 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 05:22:20,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-07-12 05:22:20,997 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:22:20,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 129 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:22:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 05:22:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 05:22:20,998 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) [2022-07-12 05:22:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 05:22:20,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2022-07-12 05:22:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:22:20,998 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 05:22:20,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-07-12 05:22:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 05:22:20,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 05:22:21,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 05:22:21,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:22:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:22:21,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 05:22:21,668 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 05:22:21,668 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-07-12 05:22:21,668 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 5)) [2022-07-12 05:22:21,668 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-12 05:22:21,668 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-12 05:22:21,668 INFO L902 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2022-07-12 05:22:21,668 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse3 (+ |ULTIMATE.start_main_~y~0#1| 1)) (.cse0 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| 0))) (or (and (< 0 |ULTIMATE.start_main_~y~0#1|) (< (* 2 |ULTIMATE.start_main_~y~0#1|) 3) .cse0 .cse1 .cse2) (and (= (div (+ (- 1) |ULTIMATE.start_main_~b~0#1|) 2) |ULTIMATE.start_main_~y~0#1|) .cse0 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (< 0 .cse3)) (and (<= 1 (mod .cse3 2)) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse3)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse4 (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))))) [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse1 (* (* |ULTIMATE.start_main_~x~0#1| (div |ULTIMATE.start_main_~y~0#1| 2)) 2)) (.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (= .cse0 (+ |ULTIMATE.start_main_~z~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~b~0#1|) (or (= (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1| .cse1) .cse0) (= (mod |ULTIMATE.start_main_~y~0#1| 2) 0)) (= |ULTIMATE.start_main_~z~0#1| .cse0))) [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse3 (+ |ULTIMATE.start_main_~y~0#1| 1)) (.cse0 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| 0))) (or (and (< 0 |ULTIMATE.start_main_~y~0#1|) (< (* 2 |ULTIMATE.start_main_~y~0#1|) 3) .cse0 .cse1 .cse2) (and (= (div (+ (- 1) |ULTIMATE.start_main_~b~0#1|) 2) |ULTIMATE.start_main_~y~0#1|) .cse0 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (< 0 .cse3)) (and (<= 1 (mod .cse3 2)) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse3)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse4 (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))))) [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-07-12 05:22:21,669 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-07-12 05:22:21,669 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-07-12 05:22:21,670 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-07-12 05:22:21,670 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-07-12 05:22:21,670 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-07-12 05:22:21,670 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-07-12 05:22:21,672 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-07-12 05:22:21,673 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 05:22:21,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 05:22:21 BoogieIcfgContainer [2022-07-12 05:22:21,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 05:22:21,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 05:22:21,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 05:22:21,697 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 05:22:21,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:21:47" (3/4) ... [2022-07-12 05:22:21,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 05:22:21,708 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-12 05:22:21,708 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 05:22:21,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-12 05:22:21,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 05:22:21,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 05:22:21,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 05:22:21,739 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 05:22:21,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 05:22:21,740 INFO L158 Benchmark]: Toolchain (without parser) took 34265.34ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 93.4MB in the beginning and 95.1MB in the end (delta: -1.7MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,740 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 05:22:21,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.41ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 99.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.83ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,741 INFO L158 Benchmark]: Boogie Preprocessor took 18.26ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 97.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,741 INFO L158 Benchmark]: RCFGBuilder took 193.29ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 87.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,741 INFO L158 Benchmark]: TraceAbstraction took 33783.99ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 87.2MB in the beginning and 97.2MB in the end (delta: -10.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,742 INFO L158 Benchmark]: Witness Printer took 42.63ms. Allocated memory is still 148.9MB. Free memory was 97.2MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 05:22:21,743 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 81.8MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.41ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 99.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.83ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.26ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 97.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 193.29ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 87.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 33783.99ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 87.2MB in the beginning and 97.2MB in the end (delta: -10.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 42.63ms. Allocated memory is still 148.9MB. Free memory was 97.2MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 15]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.7s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 737 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 562 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 957 IncrementalHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 175 mSDtfsCounter, 957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 388 SyntacticMatches, 9 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 75, 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, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 29 PreInvPairs, 45 NumberOfFragments, 308 HoareAnnotationTreeSize, 29 FomulaSimplifications, 193 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 221 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 2215 SizeOfPredicates, 25 NumberOfNonLiveVariables, 709 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 322/352 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 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((0 < y && 2 * y < 3) && b <= 5) && 1 <= b) && z + x * y == a * b) || (((((-1 + b) / 2 == y && b <= 5) && z + x * y == a * b) && a == z) && 0 < y + 1)) || (((((1 <= (y + 1) % 2 && b <= 5) && 1 <= b) && z + x * y == a * b) && y <= 1) && 0 <= y + 1)) || ((((b == y && b <= 5) && 1 <= b) && z == 0) && a == x)) || (((((y == b / 2 && b <= 5) && 1 <= b) && x == 2 * a) && z == 0) && !(b % 2 == 1)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 05:22:21,784 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: TRUE