./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/loop-crafted/simple_array_index_value_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 23:12:56,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 23:12:56,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 23:12:56,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 23:12:56,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 23:12:56,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 23:12:56,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 23:12:56,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 23:12:56,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 23:12:56,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 23:12:56,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 23:12:56,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 23:12:56,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 23:12:56,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 23:12:56,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 23:12:56,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 23:12:56,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 23:12:56,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 23:12:56,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 23:12:56,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 23:12:56,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 23:12:56,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 23:12:56,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 23:12:56,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 23:12:56,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 23:12:56,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 23:12:56,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 23:12:56,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 23:12:56,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 23:12:56,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 23:12:56,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 23:12:56,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 23:12:56,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 23:12:56,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 23:12:56,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 23:12:56,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 23:12:56,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 23:12:56,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 23:12:56,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 23:12:56,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 23:12:56,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 23:12:56,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 23:12:56,901 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 23:12:56,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 23:12:56,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 23:12:56,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 23:12:56,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 23:12:56,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 23:12:56,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 23:12:56,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 23:12:56,904 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 23:12:56,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 23:12:56,905 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 23:12:56,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 23:12:56,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 23:12:56,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 23:12:56,906 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 23:12:56,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 23:12:56,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 23:12:56,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 23:12:56,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 23:12:56,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:12:56,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 23:12:56,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 23:12:56,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 23:12:56,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 23:12:56,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 23:12:56,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 23:12:56,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 23:12:56,909 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 23:12:56,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 23:12:56,910 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 23:12:56,910 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 [2023-02-14 23:12:57,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 23:12:57,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 23:12:57,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 23:12:57,120 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 23:12:57,120 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 23:12:57,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2023-02-14 23:12:58,270 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 23:12:58,464 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 23:12:58,464 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2023-02-14 23:12:58,469 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6cfc2c9/e5b17cd87f5049e7948f4639fc553b02/FLAG305362b51 [2023-02-14 23:12:58,482 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6cfc2c9/e5b17cd87f5049e7948f4639fc553b02 [2023-02-14 23:12:58,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 23:12:58,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 23:12:58,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 23:12:58,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 23:12:58,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 23:12:58,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c25833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58, skipping insertion in model container [2023-02-14 23:12:58,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 23:12:58,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 23:12:58,622 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2023-02-14 23:12:58,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:12:58,653 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 23:12:58,667 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2023-02-14 23:12:58,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:12:58,688 INFO L208 MainTranslator]: Completed translation [2023-02-14 23:12:58,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58 WrapperNode [2023-02-14 23:12:58,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 23:12:58,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 23:12:58,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 23:12:58,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 23:12:58,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,724 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2023-02-14 23:12:58,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 23:12:58,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 23:12:58,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 23:12:58,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 23:12:58,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 23:12:58,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 23:12:58,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 23:12:58,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 23:12:58,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (1/1) ... [2023-02-14 23:12:58,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:12:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:12:58,769 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) [2023-02-14 23:12:58,784 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 [2023-02-14 23:12:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 23:12:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 23:12:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 23:12:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 23:12:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 23:12:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 23:12:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 23:12:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 23:12:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 23:12:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 23:12:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 23:12:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 23:12:58,862 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 23:12:58,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 23:12:58,978 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 23:12:58,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 23:12:58,984 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-14 23:12:58,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:12:58 BoogieIcfgContainer [2023-02-14 23:12:58,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 23:12:58,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 23:12:58,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 23:12:58,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 23:12:58,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:12:58" (1/3) ... [2023-02-14 23:12:58,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54054c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:12:58, skipping insertion in model container [2023-02-14 23:12:58,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:12:58" (2/3) ... [2023-02-14 23:12:58,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54054c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:12:58, skipping insertion in model container [2023-02-14 23:12:58,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:12:58" (3/3) ... [2023-02-14 23:12:58,993 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2023-02-14 23:12:59,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 23:12:59,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 23:12:59,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 23:12:59,052 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@598db654, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 23:12:59,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 23:12:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 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) [2023-02-14 23:12:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 23:12:59,060 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:12:59,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:12:59,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:12:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:12:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -116286682, now seen corresponding path program 1 times [2023-02-14 23:12:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:12:59,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259033011] [2023-02-14 23:12:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:12:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:12:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 23:12:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 23:12:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:12:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:12:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259033011] [2023-02-14 23:12:59,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259033011] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:12:59,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:12:59,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 23:12:59,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835800957] [2023-02-14 23:12:59,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:12:59,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:12:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:12:59,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:12:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:12:59,415 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:12:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:12:59,460 INFO L93 Difference]: Finished difference Result 60 states and 87 transitions. [2023-02-14 23:12:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:12:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-14 23:12:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:12:59,496 INFO L225 Difference]: With dead ends: 60 [2023-02-14 23:12:59,496 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 23:12:59,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:12:59,501 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:12:59,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:12:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 23:12:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-14 23:12:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:12:59,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-02-14 23:12:59,566 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2023-02-14 23:12:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:12:59,567 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-02-14 23:12:59,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:12:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-02-14 23:12:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 23:12:59,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:12:59,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:12:59,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 23:12:59,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:12:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:12:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1691769640, now seen corresponding path program 1 times [2023-02-14 23:12:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:12:59,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255470062] [2023-02-14 23:12:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:12:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:12:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-14 23:12:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 23:12:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:12:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:12:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255470062] [2023-02-14 23:12:59,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255470062] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:12:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378012701] [2023-02-14 23:12:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:12:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:12:59,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:12:59,734 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) [2023-02-14 23:12:59,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 23:12:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:12:59,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-14 23:12:59,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 23:13:00,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 23:13:00,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378012701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:13:00,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 23:13:00,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2023-02-14 23:13:00,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220050712] [2023-02-14 23:13:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:13:00,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 23:13:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 23:13:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-14 23:13:00,107 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:13:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:00,204 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-14 23:13:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 23:13:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-02-14 23:13:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:00,205 INFO L225 Difference]: With dead ends: 37 [2023-02-14 23:13:00,205 INFO L226 Difference]: Without dead ends: 35 [2023-02-14 23:13:00,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-14 23:13:00,207 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:00,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 100 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:13:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-14 23:13:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-14 23:13:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:13:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-14 23:13:00,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2023-02-14 23:13:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-14 23:13:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:13:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-14 23:13:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 23:13:00,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:13:00,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:13:00,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 23:13:00,424 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 [2023-02-14 23:13:00,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:13:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:13:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash -789252821, now seen corresponding path program 1 times [2023-02-14 23:13:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:13:00,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019168736] [2023-02-14 23:13:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:13:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-14 23:13:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 23:13:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:13:00,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:13:00,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019168736] [2023-02-14 23:13:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019168736] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:13:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609864482] [2023-02-14 23:13:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:13:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:13:00,605 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) [2023-02-14 23:13:00,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 23:13:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:00,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 23:13:00,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:13:00,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:13:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:13:00,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609864482] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:13:00,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:13:00,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 23:13:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949757964] [2023-02-14 23:13:00,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:13:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 23:13:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 23:13:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-14 23:13:00,757 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-14 23:13:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:00,802 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-14 23:13:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 23:13:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-14 23:13:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:00,807 INFO L225 Difference]: With dead ends: 65 [2023-02-14 23:13:00,807 INFO L226 Difference]: Without dead ends: 38 [2023-02-14 23:13:00,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-14 23:13:00,810 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:00,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:13:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-14 23:13:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-14 23:13:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:13:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-02-14 23:13:00,826 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 24 [2023-02-14 23:13:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:00,827 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-02-14 23:13:00,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-14 23:13:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-02-14 23:13:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 23:13:00,829 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:13:00,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:13:00,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 23:13:01,035 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 [2023-02-14 23:13:01,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:13:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:13:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -821774159, now seen corresponding path program 2 times [2023-02-14 23:13:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:13:01,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958031291] [2023-02-14 23:13:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:13:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 23:13:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 23:13:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 23:13:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:13:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958031291] [2023-02-14 23:13:01,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958031291] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:13:01,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791917589] [2023-02-14 23:13:01,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:13:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:13:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:13:01,253 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) [2023-02-14 23:13:01,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 23:13:01,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 23:13:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:13:01,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 23:13:01,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-02-14 23:13:01,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 23:13:01,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791917589] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:13:01,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 23:13:01,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-02-14 23:13:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862124565] [2023-02-14 23:13:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:13:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:13:01,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:13:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-14 23:13:01,363 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:13:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:01,372 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2023-02-14 23:13:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:13:01,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-02-14 23:13:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:01,379 INFO L225 Difference]: With dead ends: 53 [2023-02-14 23:13:01,379 INFO L226 Difference]: Without dead ends: 43 [2023-02-14 23:13:01,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-14 23:13:01,381 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:01,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:13:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-14 23:13:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-02-14 23:13:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:13:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-02-14 23:13:01,394 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2023-02-14 23:13:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:01,395 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-02-14 23:13:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 23:13:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-02-14 23:13:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 23:13:01,397 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:13:01,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:13:01,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 23:13:01,602 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 [2023-02-14 23:13:01,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:13:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:13:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2084528089, now seen corresponding path program 1 times [2023-02-14 23:13:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:13:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465014163] [2023-02-14 23:13:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:13:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 23:13:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 23:13:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-14 23:13:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-14 23:13:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 23:13:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:13:01,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465014163] [2023-02-14 23:13:01,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465014163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:13:01,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805185860] [2023-02-14 23:13:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:01,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:13:01,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:13:01,796 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) [2023-02-14 23:13:01,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 23:13:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:01,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 23:13:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 23:13:01,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:13:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 23:13:02,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805185860] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:13:02,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:13:02,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-14 23:13:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425012479] [2023-02-14 23:13:02,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:13:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 23:13:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 23:13:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-14 23:13:02,018 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-14 23:13:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:02,443 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-02-14 23:13:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 23:13:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 43 [2023-02-14 23:13:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:02,444 INFO L225 Difference]: With dead ends: 79 [2023-02-14 23:13:02,444 INFO L226 Difference]: Without dead ends: 51 [2023-02-14 23:13:02,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-02-14 23:13:02,445 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:02,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 198 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:13:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-14 23:13:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-14 23:13:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:13:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2023-02-14 23:13:02,451 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 43 [2023-02-14 23:13:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:02,452 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2023-02-14 23:13:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-14 23:13:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2023-02-14 23:13:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-14 23:13:02,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:13:02,453 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:13:02,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 23:13:02,658 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 [2023-02-14 23:13:02,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:13:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:13:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -46837221, now seen corresponding path program 2 times [2023-02-14 23:13:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:13:02,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801474830] [2023-02-14 23:13:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:02,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:13:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-14 23:13:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-14 23:13:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-14 23:13:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-14 23:13:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 23:13:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:13:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801474830] [2023-02-14 23:13:02,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801474830] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:13:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379961506] [2023-02-14 23:13:02,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:13:02,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:13:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:13:02,985 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) [2023-02-14 23:13:03,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 23:13:03,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 23:13:03,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:13:03,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 23:13:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 23:13:03,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:13:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 23:13:03,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379961506] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:13:03,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:13:03,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-14 23:13:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531708823] [2023-02-14 23:13:03,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:13:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-14 23:13:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-14 23:13:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-02-14 23:13:03,707 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-14 23:13:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:07,817 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-02-14 23:13:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-14 23:13:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 55 [2023-02-14 23:13:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:07,819 INFO L225 Difference]: With dead ends: 103 [2023-02-14 23:13:07,819 INFO L226 Difference]: Without dead ends: 75 [2023-02-14 23:13:07,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2023-02-14 23:13:07,820 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:07,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 338 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 23:13:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-14 23:13:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-02-14 23:13:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 23:13:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2023-02-14 23:13:07,829 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 55 [2023-02-14 23:13:07,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:07,829 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2023-02-14 23:13:07,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-14 23:13:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2023-02-14 23:13:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-14 23:13:07,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:13:07,831 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:13:07,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-14 23:13:08,037 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 [2023-02-14 23:13:08,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:13:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:13:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1782199293, now seen corresponding path program 3 times [2023-02-14 23:13:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:13:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225285466] [2023-02-14 23:13:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:13:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:13:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 23:13:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-14 23:13:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-14 23:13:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-02-14 23:13:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:13:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 23:13:08,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:13:08,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225285466] [2023-02-14 23:13:08,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225285466] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:13:08,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480398740] [2023-02-14 23:13:08,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 23:13:08,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:13:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:13:08,905 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) [2023-02-14 23:13:08,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 23:13:09,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-14 23:13:09,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:13:09,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-14 23:13:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:13:09,770 INFO L321 Elim1Store]: treesize reduction 120, result has 5.5 percent of original size [2023-02-14 23:13:09,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 58 [2023-02-14 23:13:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-02-14 23:13:09,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:13:17,416 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 23:13:24,093 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 23:13:24,323 INFO L321 Elim1Store]: treesize reduction 171, result has 21.2 percent of original size [2023-02-14 23:13:24,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 336 treesize of output 189 [2023-02-14 23:13:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-02-14 23:13:25,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480398740] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:13:25,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:13:25,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 13] total 46 [2023-02-14 23:13:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061204169] [2023-02-14 23:13:25,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:13:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-14 23:13:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:13:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-14 23:13:25,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1927, Unknown=0, NotChecked=0, Total=2070 [2023-02-14 23:13:25,396 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-14 23:13:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:13:28,271 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2023-02-14 23:13:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-14 23:13:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 79 [2023-02-14 23:13:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:13:28,272 INFO L225 Difference]: With dead ends: 113 [2023-02-14 23:13:28,272 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 23:13:28,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=214, Invalid=2648, Unknown=0, NotChecked=0, Total=2862 [2023-02-14 23:13:28,274 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-14 23:13:28,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 178 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-14 23:13:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 23:13:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 23:13:28,275 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) [2023-02-14 23:13:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 23:13:28,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2023-02-14 23:13:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:13:28,275 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 23:13:28,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-14 23:13:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 23:13:28,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 23:13:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 23:13:28,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-14 23:13:28,478 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 [2023-02-14 23:13:28,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 23:13:28,692 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-02-14 23:13:28,692 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-14 23:13:28,692 INFO L899 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2023-02-14 23:13:28,692 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 23:13:28,692 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 23:13:28,692 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 63) no Hoare annotation was computed. [2023-02-14 23:13:28,693 INFO L895 garLoopResultBuilder]: At program point L49-1(lines 49 55) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~loop_entered~0#1| 0) (< (mod |ULTIMATE.start_main_~index2~0#1| 4294967296) 100000)) (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)))))) [2023-02-14 23:13:28,693 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 34 65) no Hoare annotation was computed. [2023-02-14 23:13:28,693 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-14 23:13:28,693 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-02-14 23:13:28,693 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 65) no Hoare annotation was computed. [2023-02-14 23:13:28,693 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 23:13:28,694 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (or (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)))) (let ((.cse3 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse4 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (= (mod (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse3 4))) 4294967296) (mod (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse4 4))) 4294967296)) (< .cse4 100000) (< .cse3 .cse4))))) [2023-02-14 23:13:28,694 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (< .cse0 100000) (< (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) .cse0))) [2023-02-14 23:13:28,694 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-02-14 23:13:28,694 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 23:13:28,694 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296))) (= (mod (+ |ULTIMATE.start_main_#t~mem9#1| (* 4294967295 |ULTIMATE.start_main_#t~mem10#1|)) 4294967296) 0))) [2023-02-14 23:13:28,694 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-02-14 23:13:28,694 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296)) (.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse1 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296))) (and (< .cse0 100000) (< .cse1 .cse0) (= (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse0 4))) |ULTIMATE.start_main_#t~mem6#1|) (= |ULTIMATE.start_main_#t~mem5#1| (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse1 4)))))) [2023-02-14 23:13:28,695 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2023-02-14 23:13:28,695 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-14 23:13:28,695 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 22) the Hoare annotation is: true [2023-02-14 23:13:28,695 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-02-14 23:13:28,695 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2023-02-14 23:13:28,695 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2023-02-14 23:13:28,695 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-14 23:13:28,696 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2023-02-14 23:13:28,696 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 29) the Hoare annotation is: true [2023-02-14 23:13:28,696 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2023-02-14 23:13:28,696 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2023-02-14 23:13:28,696 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2023-02-14 23:13:28,699 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-02-14 23:13:28,701 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 23:13:28,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:13:28 BoogieIcfgContainer [2023-02-14 23:13:28,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 23:13:28,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 23:13:28,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 23:13:28,716 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 23:13:28,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:12:58" (3/4) ... [2023-02-14 23:13:28,719 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 23:13:28,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-14 23:13:28,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 23:13:28,727 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-02-14 23:13:28,728 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-14 23:13:28,728 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-14 23:13:28,728 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 23:13:28,758 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 23:13:28,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 23:13:28,758 INFO L158 Benchmark]: Toolchain (without parser) took 30273.11ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 110.5MB in the beginning and 80.5MB in the end (delta: 30.0MB). Peak memory consumption was 95.7MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,758 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:13:28,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.38ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 99.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.53ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,759 INFO L158 Benchmark]: Boogie Preprocessor took 18.05ms. Allocated memory is still 140.5MB. Free memory was 98.0MB in the beginning and 96.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:13:28,760 INFO L158 Benchmark]: RCFGBuilder took 242.06ms. Allocated memory is still 140.5MB. Free memory was 96.4MB in the beginning and 84.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,760 INFO L158 Benchmark]: TraceAbstraction took 29727.69ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 84.3MB in the beginning and 82.6MB in the end (delta: 1.8MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,760 INFO L158 Benchmark]: Witness Printer took 41.90ms. Allocated memory is still 205.5MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 23:13:28,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.38ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 99.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.53ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.05ms. Allocated memory is still 140.5MB. Free memory was 98.0MB in the beginning and 96.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 242.06ms. Allocated memory is still 140.5MB. Free memory was 96.4MB in the beginning and 84.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 29727.69ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 84.3MB in the beginning and 82.6MB in the end (delta: 1.8MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. * Witness Printer took 41.90ms. Allocated memory is still 205.5MB. Free memory was 82.6MB in the beginning and 80.5MB 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: 26]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.7s, OverallIterations: 7, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 1052 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 854 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2395 IncrementalHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 198 mSDtfsCounter, 2395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 572 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 97, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 41 PreInvPairs, 75 NumberOfFragments, 273 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 693 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 526 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 710 ConstructedInterpolants, 3 QuantifiedInterpolants, 4076 SizeOfPredicates, 23 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 1150/2004 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: 40]: Loop Invariant Derived loop invariant: loop_entered == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (loop_entered == 0 && index2 % 4294967296 < 100000) || (((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) || ((unknown-#memory_int-unknown[array][array + index1 % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[array][array + index2 % 4294967296 * 4] % 4294967296 && index2 % 4294967296 < 100000) && index1 % 4294967296 < index2 % 4294967296) RESULT: Ultimate proved your program to be correct! [2023-02-14 23:13:28,842 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