./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:20:19,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:20:19,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:20:19,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:20:19,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:20:19,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:20:19,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:20:19,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:20:19,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:20:19,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:20:19,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:20:19,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:20:19,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:20:19,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:20:19,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:20:19,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:20:19,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:20:19,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:20:19,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:20:19,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:20:19,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:20:19,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:20:19,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:20:19,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:20:19,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:20:19,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:20:19,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:20:19,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:20:19,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:20:19,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:20:19,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:20:19,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:20:19,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:20:19,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:20:19,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:20:19,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:20:19,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:20:19,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:20:19,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:20:19,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:20:19,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:20:19,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:20:19,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:20:19,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:20:19,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:20:19,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:20:19,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:20:19,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:20:19,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:20:19,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:20:19,742 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:20:19,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:20:19,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:20:19,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:20:19,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:20:19,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:20:19,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:20:19,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:20:19,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:20:19,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:20:19,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:20:19,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:20:19,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:20:19,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:20:19,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:20:19,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:20:19,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:20:19,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:20:19,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:20:19,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 [2021-12-21 12:20:19,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:20:19,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:20:19,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:20:19,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:20:19,952 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:20:19,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-12-21 12:20:20,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2038feee/52f7f4c0cbff431699ce07bc4745140b/FLAG4a80d7457 [2021-12-21 12:20:20,387 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:20:20,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-12-21 12:20:20,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2038feee/52f7f4c0cbff431699ce07bc4745140b/FLAG4a80d7457 [2021-12-21 12:20:20,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2038feee/52f7f4c0cbff431699ce07bc4745140b [2021-12-21 12:20:20,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:20:20,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:20:20,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:20:20,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:20:20,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:20:20,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:20:20" (1/1) ... [2021-12-21 12:20:20,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631a5606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:20, skipping insertion in model container [2021-12-21 12:20:20,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:20:20" (1/1) ... [2021-12-21 12:20:20,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:20:20,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:20:21,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-12-21 12:20:21,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:20:21,131 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:20:21,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-12-21 12:20:21,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:20:21,213 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:20:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21 WrapperNode [2021-12-21 12:20:21,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:20:21,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:20:21,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:20:21,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:20:21,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,258 INFO L137 Inliner]: procedures = 17, calls = 293, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 772 [2021-12-21 12:20:21,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:20:21,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:20:21,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:20:21,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:20:21,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:20:21,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:20:21,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:20:21,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:20:21,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (1/1) ... [2021-12-21 12:20:21,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:20:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:20:21,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 12:20:21,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 12:20:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 12:20:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-12-21 12:20:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:20:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:20:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 12:20:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:20:21,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:20:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 12:20:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:20:21,481 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:20:21,482 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:20:21,919 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:20:21,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:20:21,925 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 12:20:21,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:20:21 BoogieIcfgContainer [2021-12-21 12:20:21,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:20:21,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:20:21,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:20:21,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:20:21,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:20:20" (1/3) ... [2021-12-21 12:20:21,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e29eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:20:21, skipping insertion in model container [2021-12-21 12:20:21,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:20:21" (2/3) ... [2021-12-21 12:20:21,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e29eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:20:21, skipping insertion in model container [2021-12-21 12:20:21,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:20:21" (3/3) ... [2021-12-21 12:20:21,932 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2021-12-21 12:20:21,935 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:20:21,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:20:21,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:20:21,969 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:20:21,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:20:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-21 12:20:21,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:20:21,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:20:21,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:20:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:20:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1997100867, now seen corresponding path program 1 times [2021-12-21 12:20:21,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:20:21,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304360281] [2021-12-21 12:20:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:20:21,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:20:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:20:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:22,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:20:22,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304360281] [2021-12-21 12:20:22,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304360281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:20:22,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:20:22,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 12:20:22,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548943209] [2021-12-21 12:20:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:20:22,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 12:20:22,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:20:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 12:20:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:20:22,609 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:20:23,004 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2021-12-21 12:20:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 12:20:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-21 12:20:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:20:23,012 INFO L225 Difference]: With dead ends: 95 [2021-12-21 12:20:23,012 INFO L226 Difference]: Without dead ends: 53 [2021-12-21 12:20:23,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-12-21 12:20:23,016 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 104 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:20:23,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 655 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:20:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-21 12:20:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-12-21 12:20:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-12-21 12:20:23,044 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 44 [2021-12-21 12:20:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:20:23,044 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-12-21 12:20:23,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-12-21 12:20:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 12:20:23,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:20:23,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:20:23,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:20:23,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:20:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:20:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1678604412, now seen corresponding path program 1 times [2021-12-21 12:20:23,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:20:23,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393845115] [2021-12-21 12:20:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:20:23,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:20:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:20:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:23,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:20:23,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393845115] [2021-12-21 12:20:23,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393845115] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:20:23,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523349681] [2021-12-21 12:20:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:20:23,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:20:23,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:20:23,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:20:23,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:20:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:20:23,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-21 12:20:23,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:20:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:23,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:20:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523349681] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:20:24,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:20:24,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 30 [2021-12-21 12:20:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197218326] [2021-12-21 12:20:24,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:20:24,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-21 12:20:24,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:20:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-21 12:20:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-12-21 12:20:24,339 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:20:28,825 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-12-21 12:20:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-21 12:20:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-21 12:20:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:20:28,827 INFO L225 Difference]: With dead ends: 115 [2021-12-21 12:20:28,827 INFO L226 Difference]: Without dead ends: 112 [2021-12-21 12:20:28,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=683, Invalid=1867, Unknown=0, NotChecked=0, Total=2550 [2021-12-21 12:20:28,829 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 522 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:20:28,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 214 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 12:20:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-21 12:20:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-12-21 12:20:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-12-21 12:20:28,843 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 49 [2021-12-21 12:20:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:20:28,843 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-12-21 12:20:28,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:20:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-12-21 12:20:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 12:20:28,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:20:28,847 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:20:28,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:20:29,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:20:29,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:20:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:20:29,050 INFO L85 PathProgramCache]: Analyzing trace with hash -715219644, now seen corresponding path program 2 times [2021-12-21 12:20:29,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:20:29,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173257893] [2021-12-21 12:20:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:20:29,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:20:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:20:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:29,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:20:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173257893] [2021-12-21 12:20:29,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173257893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:20:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377553946] [2021-12-21 12:20:29,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:20:29,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:20:29,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:20:29,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:20:29,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:20:30,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:20:30,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:20:30,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 12:20:30,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:20:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:30,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:20:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:20:31,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377553946] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:20:31,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:20:31,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 26] total 54 [2021-12-21 12:20:31,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040419598] [2021-12-21 12:20:31,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:20:31,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-21 12:20:31,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:20:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-21 12:20:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2153, Unknown=0, NotChecked=0, Total=2862 [2021-12-21 12:20:31,471 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 54 states, 54 states have (on average 4.2407407407407405) internal successors, (229), 54 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:21:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:21:15,787 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-12-21 12:21:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-21 12:21:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.2407407407407405) internal successors, (229), 54 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-21 12:21:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:21:15,793 INFO L225 Difference]: With dead ends: 215 [2021-12-21 12:21:15,793 INFO L226 Difference]: Without dead ends: 212 [2021-12-21 12:21:15,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=2208, Invalid=6722, Unknown=0, NotChecked=0, Total=8930 [2021-12-21 12:21:15,796 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1170 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:21:15,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 667 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 12:21:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-21 12:21:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2021-12-21 12:21:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0047846889952152) internal successors, (210), 209 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:21:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-12-21 12:21:15,830 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 109 [2021-12-21 12:21:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:21:15,832 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-12-21 12:21:15,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.2407407407407405) internal successors, (229), 54 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:21:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-12-21 12:21:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-21 12:21:15,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:21:15,841 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:21:15,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:21:16,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 12:21:16,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:21:16,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:21:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash -203406972, now seen corresponding path program 3 times [2021-12-21 12:21:16,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:21:16,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893138593] [2021-12-21 12:21:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:21:16,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:21:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:21:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 99 proven. 2640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:21:18,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:21:18,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893138593] [2021-12-21 12:21:18,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893138593] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:21:18,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484252731] [2021-12-21 12:21:18,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 12:21:18,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:21:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:21:18,445 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) [2021-12-21 12:21:18,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:21:19,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 12:21:19,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:21:19,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 128 conjunts are in the unsatisfiable core [2021-12-21 12:21:19,938 INFO L286 TraceCheckSpWp]: Computing forward predicates...