./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test29-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/test29-2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a0b8f7221e31cc2cda01831098deec15967e67b ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:59:08,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:59:08,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:59:08,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:59:08,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:59:08,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:59:08,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:59:08,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:59:08,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:59:08,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:59:08,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:59:08,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:59:08,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:59:08,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:59:08,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:59:08,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:59:08,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:59:08,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:59:08,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:59:08,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:59:08,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:59:08,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:59:08,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:59:08,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:59:08,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:59:08,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:59:08,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:59:08,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:59:08,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:59:08,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:59:08,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:59:08,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:59:08,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:59:08,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:59:08,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:59:08,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:59:08,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:59:08,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:59:08,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:59:08,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:59:08,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:59:08,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:59:08,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:59:08,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:59:08,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:59:08,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:59:08,841 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:59:08,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:59:08,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:59:08,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:59:08,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:59:08,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:59:08,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:59:08,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:59:08,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:59:08,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:59:08,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:59:08,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:59:08,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:59:08,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:59:08,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:59:08,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:59:08,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:59:08,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:59:08,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:59:08,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:59:08,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:59:08,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:59:08,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:59:08,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:59:08,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:59:08,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 5a0b8f7221e31cc2cda01831098deec15967e67b [2020-07-28 17:59:09,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:59:09,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:59:09,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:59:09,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:59:09,169 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:59:09,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-2.c [2020-07-28 17:59:09,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6951a4e/633e3324405347a49a5b00b5d2472b0c/FLAG050febbdf [2020-07-28 17:59:09,746 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:59:09,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-2.c [2020-07-28 17:59:09,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6951a4e/633e3324405347a49a5b00b5d2472b0c/FLAG050febbdf [2020-07-28 17:59:10,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6951a4e/633e3324405347a49a5b00b5d2472b0c [2020-07-28 17:59:10,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:59:10,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:59:10,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:10,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:59:10,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:59:10,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245b50b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10, skipping insertion in model container [2020-07-28 17:59:10,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:59:10,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:59:10,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:10,387 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:59:10,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:10,423 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:59:10,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10 WrapperNode [2020-07-28 17:59:10,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:10,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:10,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:59:10,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:59:10,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:10,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:59:10,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:59:10,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:59:10,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... [2020-07-28 17:59:10,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:59:10,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:59:10,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:59:10,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:59:10,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:59:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:59:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:59:10,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:59:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:59:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:59:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:59:10,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:59:10,916 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:59:10,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:10 BoogieIcfgContainer [2020-07-28 17:59:10,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:59:10,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:59:10,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:59:10,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:59:10,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:59:10" (1/3) ... [2020-07-28 17:59:10,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a3747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:10, skipping insertion in model container [2020-07-28 17:59:10,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:10" (2/3) ... [2020-07-28 17:59:10,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a3747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:10, skipping insertion in model container [2020-07-28 17:59:10,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:10" (3/3) ... [2020-07-28 17:59:10,928 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-07-28 17:59:10,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:59:10,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:59:10,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:59:10,984 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:59:10,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:59:10,985 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:59:10,985 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:59:10,985 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:59:10,985 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:59:10,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:59:10,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:59:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-07-28 17:59:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:59:11,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:11,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:59:11,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:11,011 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2020-07-28 17:59:11,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:11,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690686565] [2020-07-28 17:59:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:11,267 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {16#true} is VALID [2020-07-28 17:59:11,270 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#true} havoc main_#res;havoc main_#t~nondet0, main_#t~ite1.base, main_#t~ite1.offset, main_#t~mem2, main_#t~short3, main_~#d1~0.base, main_~#d1~0.offset, main_~#d2~0.base, main_~#d2~0.offset, main_~n~0, main_~pd~0.base, main_~pd~0.offset;call main_~#d1~0.base, main_~#d1~0.offset := #Ultimate.allocOnStack(4);call main_~#d2~0.base, main_~#d2~0.offset := #Ultimate.allocOnStack(4);assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {18#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_~#d1~0.base|))} is VALID [2020-07-28 17:59:11,272 INFO L280 TraceCheckUtils]: 2: Hoare triple {18#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_~#d1~0.base|))} assume 0 != main_~n~0;main_#t~ite1.base, main_#t~ite1.offset := main_~#d1~0.base, main_~#d1~0.offset; {19#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|))} is VALID [2020-07-28 17:59:11,274 INFO L280 TraceCheckUtils]: 3: Hoare triple {19#(not (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|))} main_~pd~0.base, main_~pd~0.offset := main_#t~ite1.base, main_#t~ite1.offset;havoc main_#t~ite1.base, main_#t~ite1.offset; {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} is VALID [2020-07-28 17:59:11,275 INFO L280 TraceCheckUtils]: 4: Hoare triple {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} assume main_~pd~0.base == main_~#d1~0.base && main_~pd~0.offset == main_~#d1~0.offset;call write~int(0, main_~pd~0.base, main_~pd~0.offset, 4); {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} is VALID [2020-07-28 17:59:11,277 INFO L280 TraceCheckUtils]: 5: Hoare triple {20#(not (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base))} main_#t~short3 := main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset; {21#(not |ULTIMATE.start_main_#t~short3|)} is VALID [2020-07-28 17:59:11,278 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#(not |ULTIMATE.start_main_#t~short3|)} assume main_#t~short3;call main_#t~mem2 := read~int(main_~#d2~0.base, main_~#d2~0.offset, 1);main_#t~short3 := 0 != main_#t~mem2; {17#false} is VALID [2020-07-28 17:59:11,278 INFO L280 TraceCheckUtils]: 7: Hoare triple {17#false} assume main_#t~short3;havoc main_#t~short3;havoc main_#t~mem2; {17#false} is VALID [2020-07-28 17:59:11,279 INFO L280 TraceCheckUtils]: 8: Hoare triple {17#false} assume !false; {17#false} is VALID [2020-07-28 17:59:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:11,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690686565] [2020-07-28 17:59:11,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:59:11,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-28 17:59:11,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039095361] [2020-07-28 17:59:11,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:59:11,294 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:11,298 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:59:11,323 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:59:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:59:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:59:11,337 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2020-07-28 17:59:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,579 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2020-07-28 17:59:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-28 17:59:11,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:59:11,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2020-07-28 17:59:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2020-07-28 17:59:11,592 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 32 transitions. [2020-07-28 17:59:11,640 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:11,651 INFO L225 Difference]: With dead ends: 25 [2020-07-28 17:59:11,651 INFO L226 Difference]: Without dead ends: 10 [2020-07-28 17:59:11,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:59:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-28 17:59:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-28 17:59:11,688 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:11,688 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:11,689 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:11,690 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,692 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-07-28 17:59:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:11,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:11,693 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:11,694 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:11,694 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-28 17:59:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,696 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-07-28 17:59:11,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:11,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:11,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:11,697 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:11,698 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:59:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-07-28 17:59:11,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-07-28 17:59:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:11,702 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-07-28 17:59:11,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:59:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-07-28 17:59:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:59:11,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:11,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:59:11,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:59:11,704 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:11,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2020-07-28 17:59:11,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:11,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496504017] [2020-07-28 17:59:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:11,823 INFO L280 TraceCheckUtils]: 0: Hoare triple {92#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {92#true} is VALID [2020-07-28 17:59:11,824 INFO L280 TraceCheckUtils]: 1: Hoare triple {92#true} havoc main_#res;havoc main_#t~nondet0, main_#t~ite1.base, main_#t~ite1.offset, main_#t~mem2, main_#t~short3, main_~#d1~0.base, main_~#d1~0.offset, main_~#d2~0.base, main_~#d2~0.offset, main_~n~0, main_~pd~0.base, main_~pd~0.offset;call main_~#d1~0.base, main_~#d1~0.offset := #Ultimate.allocOnStack(4);call main_~#d2~0.base, main_~#d2~0.offset := #Ultimate.allocOnStack(4);assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {92#true} is VALID [2020-07-28 17:59:11,825 INFO L280 TraceCheckUtils]: 2: Hoare triple {92#true} assume !(0 != main_~n~0);main_#t~ite1.base, main_#t~ite1.offset := main_~#d2~0.base, main_~#d2~0.offset; {94#(and (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|) (= |ULTIMATE.start_main_#t~ite1.offset| |ULTIMATE.start_main_~#d2~0.offset|))} is VALID [2020-07-28 17:59:11,826 INFO L280 TraceCheckUtils]: 3: Hoare triple {94#(and (= |ULTIMATE.start_main_~#d2~0.base| |ULTIMATE.start_main_#t~ite1.base|) (= |ULTIMATE.start_main_#t~ite1.offset| |ULTIMATE.start_main_~#d2~0.offset|))} main_~pd~0.base, main_~pd~0.offset := main_#t~ite1.base, main_#t~ite1.offset;havoc main_#t~ite1.base, main_#t~ite1.offset; {95#(and (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base) (= ULTIMATE.start_main_~pd~0.offset |ULTIMATE.start_main_~#d2~0.offset|))} is VALID [2020-07-28 17:59:11,828 INFO L280 TraceCheckUtils]: 4: Hoare triple {95#(and (= |ULTIMATE.start_main_~#d2~0.base| ULTIMATE.start_main_~pd~0.base) (= ULTIMATE.start_main_~pd~0.offset |ULTIMATE.start_main_~#d2~0.offset|))} assume !(main_~pd~0.base == main_~#d1~0.base && main_~pd~0.offset == main_~#d1~0.offset);call write~int(0, main_~pd~0.base, main_~pd~0.offset, 1); {96#(= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#d2~0.base|) |ULTIMATE.start_main_~#d2~0.offset|))} is VALID [2020-07-28 17:59:11,828 INFO L280 TraceCheckUtils]: 5: Hoare triple {96#(= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#d2~0.base|) |ULTIMATE.start_main_~#d2~0.offset|))} main_#t~short3 := main_~pd~0.base == main_~#d2~0.base && main_~pd~0.offset == main_~#d2~0.offset; {96#(= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#d2~0.base|) |ULTIMATE.start_main_~#d2~0.offset|))} is VALID [2020-07-28 17:59:11,830 INFO L280 TraceCheckUtils]: 6: Hoare triple {96#(= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#d2~0.base|) |ULTIMATE.start_main_~#d2~0.offset|))} assume main_#t~short3;call main_#t~mem2 := read~int(main_~#d2~0.base, main_~#d2~0.offset, 1);main_#t~short3 := 0 != main_#t~mem2; {97#(not |ULTIMATE.start_main_#t~short3|)} is VALID [2020-07-28 17:59:11,830 INFO L280 TraceCheckUtils]: 7: Hoare triple {97#(not |ULTIMATE.start_main_#t~short3|)} assume main_#t~short3;havoc main_#t~short3;havoc main_#t~mem2; {93#false} is VALID [2020-07-28 17:59:11,831 INFO L280 TraceCheckUtils]: 8: Hoare triple {93#false} assume !false; {93#false} is VALID [2020-07-28 17:59:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:11,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496504017] [2020-07-28 17:59:11,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:59:11,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-28 17:59:11,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965308765] [2020-07-28 17:59:11,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:59:11,835 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:11,836 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:59:11,850 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:11,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:59:11,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:11,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:59:11,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:59:11,851 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 6 states. [2020-07-28 17:59:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,950 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-07-28 17:59:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:59:11,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:59:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-07-28 17:59:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-07-28 17:59:11,953 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 9 transitions. [2020-07-28 17:59:11,968 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:11,968 INFO L225 Difference]: With dead ends: 10 [2020-07-28 17:59:11,968 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:59:11,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-28 17:59:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:59:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:59:11,970 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:11,970 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:59:11,971 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:59:11,971 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:59:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,971 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:59:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:59:11,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:11,972 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:11,972 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:59:11,973 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:59:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:11,973 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:59:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:59:11,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:11,974 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:11,974 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:11,974 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:59:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:59:11,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-28 17:59:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:11,975 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:59:11,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:59:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:59:11,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:11,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:59:11,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:59:11,993 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:59:11,994 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-28 17:59:11,994 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-07-28 17:59:11,994 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-28 17:59:11,994 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-07-28 17:59:11,994 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:59:11,995 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:59:11,995 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:59:11,995 INFO L271 CegarLoopResult]: At program point L28(lines 11 29) the Hoare annotation is: true [2020-07-28 17:59:11,995 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-28 17:59:11,996 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-07-28 17:59:11,996 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-07-28 17:59:11,996 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2020-07-28 17:59:12,000 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:59:12,001 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:59:12,001 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:59:12,001 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:59:12,001 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 17:59:12,001 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-28 17:59:12,002 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-28 17:59:12,003 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-28 17:59:12,003 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:59:12,003 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:59:12,003 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:59:12,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:59:12 BoogieIcfgContainer [2020-07-28 17:59:12,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:59:12,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:59:12,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:59:12,012 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:59:12,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:10" (3/4) ... [2020-07-28 17:59:12,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:59:12,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-07-28 17:59:12,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:59:12,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:59:12,079 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:59:12,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:59:12,083 INFO L168 Benchmark]: Toolchain (without parser) took 1977.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 953.5 MB in the beginning and 1.0 GB in the end (delta: -56.9 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,084 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:12,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.72 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 942.8 MB in the beginning and 1.1 GB in the end (delta: -201.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,086 INFO L168 Benchmark]: Boogie Preprocessor took 22.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,086 INFO L168 Benchmark]: RCFGBuilder took 381.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,087 INFO L168 Benchmark]: TraceAbstraction took 1091.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:12,087 INFO L168 Benchmark]: Witness Printer took 67.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:12,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 316.72 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 942.8 MB in the beginning and 1.1 GB in the end (delta: -201.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 381.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1091.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. * Witness Printer took 67.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 22 SDslu, 23 SDs, 0 SdLazy, 55 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...