./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test22-1.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 e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 08:09:38,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 08:09:38,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 08:09:38,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 08:09:38,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 08:09:38,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 08:09:38,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 08:09:38,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 08:09:38,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 08:09:38,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 08:09:38,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 08:09:38,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 08:09:38,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 08:09:38,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 08:09:38,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 08:09:38,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 08:09:38,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 08:09:38,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 08:09:38,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 08:09:38,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 08:09:38,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 08:09:38,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 08:09:38,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 08:09:38,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 08:09:38,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 08:09:38,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 08:09:38,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 08:09:38,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 08:09:38,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 08:09:38,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 08:09:38,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 08:09:38,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 08:09:38,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 08:09:38,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 08:09:38,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 08:09:38,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 08:09:38,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 08:09:38,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 08:09:38,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 08:09:38,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 08:09:38,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 08:09:38,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 08:09:38,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 08:09:38,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 08:09:38,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 08:09:38,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 08:09:38,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 08:09:38,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 08:09:38,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 08:09:38,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 08:09:38,426 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 08:09:38,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 08:09:38,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 08:09:38,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 08:09:38,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 08:09:38,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 08:09:38,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 08:09:38,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 08:09:38,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 08:09:38,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 08:09:38,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:09:38,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 08:09:38,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 08:09:38,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 08:09:38,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 08:09:38,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 08:09:38,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 08:09:38,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 08:09:38,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 08:09:38,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 08:09:38,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f [2021-12-17 08:09:38,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 08:09:38,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 08:09:38,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 08:09:38,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 08:09:38,695 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 08:09:38,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test22-1.c [2021-12-17 08:09:38,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b175cd5/2248557ce1874d30848e44dc8f6bab82/FLAG22aab0288 [2021-12-17 08:09:39,099 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 08:09:39,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test22-1.c [2021-12-17 08:09:39,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b175cd5/2248557ce1874d30848e44dc8f6bab82/FLAG22aab0288 [2021-12-17 08:09:39,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b175cd5/2248557ce1874d30848e44dc8f6bab82 [2021-12-17 08:09:39,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 08:09:39,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 08:09:39,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 08:09:39,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 08:09:39,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 08:09:39,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c62504c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39, skipping insertion in model container [2021-12-17 08:09:39,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 08:09:39,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 08:09:39,298 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/ldv-regression/test22-1.c[1029,1042] [2021-12-17 08:09:39,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:09:39,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 08:09:39,329 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/ldv-regression/test22-1.c[1029,1042] [2021-12-17 08:09:39,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:09:39,343 INFO L208 MainTranslator]: Completed translation [2021-12-17 08:09:39,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39 WrapperNode [2021-12-17 08:09:39,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 08:09:39,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 08:09:39,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 08:09:39,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 08:09:39,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,379 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2021-12-17 08:09:39,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 08:09:39,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 08:09:39,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 08:09:39,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 08:09:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 08:09:39,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 08:09:39,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 08:09:39,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 08:09:39,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (1/1) ... [2021-12-17 08:09:39,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:09:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:39,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 08:09:39,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 08:09:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 08:09:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 08:09:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 08:09:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-12-17 08:09:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-12-17 08:09:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 08:09:39,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 08:09:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 08:09:39,538 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 08:09:39,539 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 08:09:39,704 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 08:09:39,708 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 08:09:39,708 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 08:09:39,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:09:39 BoogieIcfgContainer [2021-12-17 08:09:39,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 08:09:39,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 08:09:39,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 08:09:39,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 08:09:39,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:09:39" (1/3) ... [2021-12-17 08:09:39,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a33ddad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:09:39, skipping insertion in model container [2021-12-17 08:09:39,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:39" (2/3) ... [2021-12-17 08:09:39,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a33ddad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:09:39, skipping insertion in model container [2021-12-17 08:09:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:09:39" (3/3) ... [2021-12-17 08:09:39,714 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2021-12-17 08:09:39,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 08:09:39,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 08:09:39,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 08:09:39,770 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 08:09:39,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 08:09:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 08:09:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 08:09:39,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:09:39,791 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 08:09:39,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:09:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:09:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -911093318, now seen corresponding path program 1 times [2021-12-17 08:09:39,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:09:39,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852359883] [2021-12-17 08:09:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:39,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:09:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:09:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 08:09:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 08:09:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 08:09:40,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:09:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852359883] [2021-12-17 08:09:40,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852359883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:09:40,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:09:40,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 08:09:40,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584392551] [2021-12-17 08:09:40,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:09:40,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 08:09:40,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:09:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 08:09:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 08:09:40,062 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 08:09:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:09:40,078 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-12-17 08:09:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 08:09:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-17 08:09:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:09:40,085 INFO L225 Difference]: With dead ends: 35 [2021-12-17 08:09:40,086 INFO L226 Difference]: Without dead ends: 22 [2021-12-17 08:09:40,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 08:09:40,092 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 08:09:40,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 08:09:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-17 08:09:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-17 08:09:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 08:09:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-17 08:09:40,127 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2021-12-17 08:09:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:09:40,129 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-17 08:09:40,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 08:09:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-17 08:09:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 08:09:40,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:09:40,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 08:09:40,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 08:09:40,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:09:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:09:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1614870372, now seen corresponding path program 1 times [2021-12-17 08:09:40,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:09:40,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943501545] [2021-12-17 08:09:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:40,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:09:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:09:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 08:09:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 08:09:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 08:09:40,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:09:40,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943501545] [2021-12-17 08:09:40,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943501545] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:09:40,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197370462] [2021-12-17 08:09:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:40,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:40,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 08:09:40,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 08:09:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-17 08:09:40,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:09:40,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-17 08:09:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 08:09:40,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:09:40,873 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-17 08:09:40,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-17 08:09:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 08:09:40,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197370462] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 08:09:40,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-17 08:09:40,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 11] total 21 [2021-12-17 08:09:40,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975765094] [2021-12-17 08:09:40,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:09:40,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 08:09:40,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:09:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 08:09:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-12-17 08:09:40,942 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 08:09:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:09:40,991 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-17 08:09:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 08:09:40,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-12-17 08:09:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:09:40,992 INFO L225 Difference]: With dead ends: 30 [2021-12-17 08:09:40,992 INFO L226 Difference]: Without dead ends: 25 [2021-12-17 08:09:40,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-12-17 08:09:40,993 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 08:09:40,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 08:09:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-17 08:09:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-12-17 08:09:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 08:09:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-17 08:09:40,997 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2021-12-17 08:09:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:09:40,998 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-17 08:09:40,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 08:09:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-17 08:09:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-17 08:09:40,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:09:40,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 08:09:41,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 08:09:41,215 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 [2021-12-17 08:09:41,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:09:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:09:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1377934871, now seen corresponding path program 1 times [2021-12-17 08:09:41,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:09:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653938409] [2021-12-17 08:09:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:41,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:09:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:09:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 08:09:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 08:09:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 08:09:41,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:09:41,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653938409] [2021-12-17 08:09:41,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653938409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:09:41,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589806953] [2021-12-17 08:09:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:41,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:41,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:41,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 08:09:41,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 08:09:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:41,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-17 08:09:41,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:09:41,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-17 08:09:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 08:09:41,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:09:41,844 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-17 08:09:41,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-17 08:09:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 08:09:41,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589806953] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 08:09:41,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 08:09:41,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 7] total 24 [2021-12-17 08:09:41,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717958020] [2021-12-17 08:09:41,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 08:09:41,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-17 08:09:41,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:09:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-17 08:09:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-12-17 08:09:41,910 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 08:09:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:09:42,627 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2021-12-17 08:09:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-17 08:09:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 31 [2021-12-17 08:09:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:09:42,629 INFO L225 Difference]: With dead ends: 71 [2021-12-17 08:09:42,630 INFO L226 Difference]: Without dead ends: 61 [2021-12-17 08:09:42,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=420, Invalid=2030, Unknown=0, NotChecked=0, Total=2450 [2021-12-17 08:09:42,631 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 08:09:42,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 221 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 08:09:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-17 08:09:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-12-17 08:09:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-17 08:09:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-12-17 08:09:42,638 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 31 [2021-12-17 08:09:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:09:42,639 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-12-17 08:09:42,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 08:09:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-12-17 08:09:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-17 08:09:42,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:09:42,640 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 08:09:42,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 08:09:42,840 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 [2021-12-17 08:09:42,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:09:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:09:42,841 INFO L85 PathProgramCache]: Analyzing trace with hash -772238856, now seen corresponding path program 2 times [2021-12-17 08:09:42,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:09:42,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72246914] [2021-12-17 08:09:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:42,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:09:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:09:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:43,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 08:09:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 08:09:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 08:09:43,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:09:43,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72246914] [2021-12-17 08:09:43,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72246914] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:09:43,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013585366] [2021-12-17 08:09:43,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 08:09:43,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:43,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:43,094 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) [2021-12-17 08:09:43,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 08:09:43,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 08:09:43,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 08:09:43,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-17 08:09:43,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:09:43,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-17 08:09:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 08:09:43,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:09:43,846 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-17 08:09:43,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-17 08:09:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 08:09:43,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013585366] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 08:09:43,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 08:09:43,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 10] total 37 [2021-12-17 08:09:43,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95837670] [2021-12-17 08:09:43,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 08:09:43,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-17 08:09:43,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:09:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-17 08:09:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2021-12-17 08:09:43,921 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-17 08:09:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:09:45,507 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2021-12-17 08:09:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-17 08:09:45,508 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 37 [2021-12-17 08:09:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:09:45,509 INFO L225 Difference]: With dead ends: 90 [2021-12-17 08:09:45,509 INFO L226 Difference]: Without dead ends: 85 [2021-12-17 08:09:45,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1387, Invalid=5753, Unknown=0, NotChecked=0, Total=7140 [2021-12-17 08:09:45,511 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 184 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 08:09:45,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 215 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 08:09:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-17 08:09:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2021-12-17 08:09:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-17 08:09:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-12-17 08:09:45,520 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 37 [2021-12-17 08:09:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:09:45,521 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-12-17 08:09:45,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-17 08:09:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-12-17 08:09:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 08:09:45,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:09:45,522 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 08:09:45,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 08:09:45,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:45,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:09:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:09:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1758737322, now seen corresponding path program 3 times [2021-12-17 08:09:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:09:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143013616] [2021-12-17 08:09:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:09:45,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:09:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:09:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 08:09:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 08:09:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:09:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 08:09:45,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:09:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143013616] [2021-12-17 08:09:45,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143013616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:09:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069555503] [2021-12-17 08:09:45,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 08:09:45,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:45,897 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) [2021-12-17 08:09:45,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 08:09:45,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-17 08:09:45,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 08:09:45,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-17 08:09:45,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:09:46,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-12-17 08:09:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 08:09:46,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:09:46,683 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-17 08:09:46,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 30 [2021-12-17 08:09:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-17 08:09:46,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069555503] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 08:09:46,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 08:09:46,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 11] total 37 [2021-12-17 08:09:46,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453031388] [2021-12-17 08:09:46,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 08:09:46,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-17 08:09:46,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:09:46,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-17 08:09:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2021-12-17 08:09:46,867 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-17 08:09:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:09:50,237 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-12-17 08:09:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-12-17 08:09:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2021-12-17 08:09:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:09:50,238 INFO L225 Difference]: With dead ends: 114 [2021-12-17 08:09:50,239 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 08:09:50,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1430, Invalid=12142, Unknown=0, NotChecked=0, Total=13572 [2021-12-17 08:09:50,242 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 138 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 08:09:50,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 264 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 08:09:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 08:09:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 08:09:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 08:09:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 08:09:50,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-12-17 08:09:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:09:50,245 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 08:09:50,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-17 08:09:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 08:09:50,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 08:09:50,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 08:09:50,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 08:09:50,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:09:50,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 08:09:51,166 INFO L858 garLoopResultBuilder]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L861 garLoopResultBuilder]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L854 garLoopResultBuilder]: At program point L35-2(line 35) the Hoare annotation is: (and (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L854 garLoopResultBuilder]: At program point L35-4(line 35) the Hoare annotation is: (and (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point L35-5(line 35) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L854 garLoopResultBuilder]: At program point L29(lines 27 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_main_~pa~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |~#d1~0.base| 4) (<= 1 |ULTIMATE.start_check_#res#1|) (= |~#d1~0.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~pd1~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) [2021-12-17 08:09:51,167 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed. [2021-12-17 08:09:51,167 INFO L854 garLoopResultBuilder]: At program point L44(lines 33 52) the Hoare annotation is: false [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse6 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse0 (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~pa~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse2 (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse3 (= |~#d1~0.base| 4)) (.cse4 (= |~#d1~0.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~pd1~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 3))) (and .cse0 .cse1 .cse3 .cse2 .cse4 .cse5 (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 9))) (and .cse0 .cse1 .cse2 .cse3 (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 10)) .cse4 .cse5) (and .cse0 (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 2)) .cse1 .cse3 .cse2 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 6)) .cse3 .cse4 .cse5) (and (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 8)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 4)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 7)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 5)) .cse0 .cse1 .cse3 .cse2 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= .cse6 |ULTIMATE.start_main_~i~0#1|) .cse5) (and (= .cse6 (+ |ULTIMATE.start_main_~i~0#1| 1)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5))) [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L861 garLoopResultBuilder]: At program point L51(lines 32 52) the Hoare annotation is: true [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2021-12-17 08:09:51,168 INFO L858 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-12-17 08:09:51,171 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-12-17 08:09:51,172 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 08:09:51,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 08:09:51 BoogieIcfgContainer [2021-12-17 08:09:51,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 08:09:51,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 08:09:51,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 08:09:51,208 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 08:09:51,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:09:39" (3/4) ... [2021-12-17 08:09:51,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 08:09:51,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2021-12-17 08:09:51,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-12-17 08:09:51,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-17 08:09:51,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 08:09:51,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 08:09:51,236 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((pa == pd2 && pa == pd2) && pd1 == pd2) && d1 == 4) && 1 <= \result) && d1 == 0) && unknown-#memory_int-unknown[pd2][pd2] == i) && pd1 == pd2 [2021-12-17 08:09:51,252 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 08:09:51,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 08:09:51,253 INFO L158 Benchmark]: Toolchain (without parser) took 12136.69ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 93.8MB in the beginning and 78.3MB in the end (delta: 15.5MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,253 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 08:09:51,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.69ms. Allocated memory is still 123.7MB. Free memory was 93.8MB in the beginning and 99.9MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.58ms. Allocated memory is still 123.7MB. Free memory was 99.9MB in the beginning and 98.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,254 INFO L158 Benchmark]: Boogie Preprocessor took 31.73ms. Allocated memory is still 123.7MB. Free memory was 98.0MB in the beginning and 96.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,254 INFO L158 Benchmark]: RCFGBuilder took 296.33ms. Allocated memory is still 123.7MB. Free memory was 96.8MB in the beginning and 85.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,254 INFO L158 Benchmark]: TraceAbstraction took 11497.03ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 85.4MB in the beginning and 81.4MB in the end (delta: 4.0MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,255 INFO L158 Benchmark]: Witness Printer took 44.93ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 78.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:09:51,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.69ms. Allocated memory is still 123.7MB. Free memory was 93.8MB in the beginning and 99.9MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.58ms. Allocated memory is still 123.7MB. Free memory was 99.9MB in the beginning and 98.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.73ms. Allocated memory is still 123.7MB. Free memory was 98.0MB in the beginning and 96.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.33ms. Allocated memory is still 123.7MB. Free memory was 96.8MB in the beginning and 85.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11497.03ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 85.4MB in the beginning and 81.4MB in the end (delta: 4.0MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. * Witness Printer took 44.93ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 78.3MB in the end (delta: 3.1MB). 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: 50]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 456 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 712 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2596 IncrementalHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 96 mSDtfsCounter, 2596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 530 GetRequests, 256 SyntacticMatches, 7 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5396 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 53 NumberOfFragments, 360 HoareAnnotationTreeSize, 13 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5380 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 320 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 453 ConstructedInterpolants, 0 QuantifiedInterpolants, 2419 SizeOfPredicates, 47 NumberOfNonLiveVariables, 743 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 287/552 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: (((((((((((((((pa == pd2 && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && pd1 == pd2) && unknown-#memory_int-unknown[pd2][pd2] == i + 3) || ((((((pa == pd2 && pa == pd2) && d1 == 4) && pd1 == pd2) && d1 == 0) && pd1 == pd2) && unknown-#memory_int-unknown[pd2][pd2] == i + 9)) || ((((((pa == pd2 && pa == pd2) && pd1 == pd2) && d1 == 4) && unknown-#memory_int-unknown[pd2][pd2] == i + 10) && d1 == 0) && pd1 == pd2)) || ((((((pa == pd2 && unknown-#memory_int-unknown[pd2][pd2] == i + 2) && pa == pd2) && d1 == 4) && pd1 == pd2) && d1 == 0) && pd1 == pd2)) || ((((((pa == pd2 && pa == pd2) && pd1 == pd2) && unknown-#memory_int-unknown[pd2][pd2] == i + 6) && d1 == 4) && d1 == 0) && pd1 == pd2)) || ((((((unknown-#memory_int-unknown[pd2][pd2] == i + 8 && pa == pd2) && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && pd1 == pd2)) || ((((((unknown-#memory_int-unknown[pd2][pd2] == i + 4 && pa == pd2) && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && pd1 == pd2)) || ((((((unknown-#memory_int-unknown[pd2][pd2] == i + 7 && pa == pd2) && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && pd1 == pd2)) || ((((((unknown-#memory_int-unknown[pd2][pd2] == i + 5 && pa == pd2) && pa == pd2) && d1 == 4) && pd1 == pd2) && d1 == 0) && pd1 == pd2)) || ((((((pa == pd2 && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && unknown-#memory_int-unknown[pd2][pd2] == i) && pd1 == pd2)) || ((((((unknown-#memory_int-unknown[pd2][pd2] == i + 1 && pa == pd2) && pa == pd2) && pd1 == pd2) && d1 == 4) && d1 == 0) && pd1 == pd2) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((pa == pd2 && pa == pd2) && pd1 == pd2) && d1 == 4) && 1 <= \result) && d1 == 0) && unknown-#memory_int-unknown[pd2][pd2] == i) && pd1 == pd2 RESULT: Ultimate proved your program to be correct! [2021-12-17 08:09:51,307 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