./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a96be28be4b50f026536d78db5ba85eeb0ae4413 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:50:52,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:50:52,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:50:52,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:50:52,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:50:53,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:50:53,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:50:53,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:50:53,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:50:53,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:50:53,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:50:53,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:50:53,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:50:53,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:50:53,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:50:53,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:50:53,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:50:53,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:50:53,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:50:53,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:50:53,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:50:53,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:50:53,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:50:53,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:50:53,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:50:53,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:50:53,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:50:53,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:50:53,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:50:53,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:50:53,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:50:53,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:50:53,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:50:53,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:50:53,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:50:53,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:50:53,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:50:53,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:50:53,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:50:53,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:50:53,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:50:53,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:50:53,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:50:53,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:50:53,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:50:53,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:50:53,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:50:53,122 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:50:53,122 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:50:53,123 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:50:53,123 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:50:53,123 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:50:53,124 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:50:53,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:50:53,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:50:53,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:50:53,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:50:53,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:50:53,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:50:53,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:50:53,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:50:53,127 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:50:53,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:50:53,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:50:53,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:50:53,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:50:53,129 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:50:53,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:50:53,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:50:53,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:50:53,130 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:50:53,131 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:50:53,131 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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(F end) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a96be28be4b50f026536d78db5ba85eeb0ae4413 [2020-10-19 18:50:53,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:50:53,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:50:53,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:50:53,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:50:53,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:50:53,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2020-10-19 18:50:53,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ff17bb03/f640f2d365ea45708b339f57927e2797/FLAGd6c23c131 [2020-10-19 18:50:54,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:50:54,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2020-10-19 18:50:54,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ff17bb03/f640f2d365ea45708b339f57927e2797/FLAGd6c23c131 [2020-10-19 18:50:54,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ff17bb03/f640f2d365ea45708b339f57927e2797 [2020-10-19 18:50:54,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:50:54,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:50:54,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:50:54,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:50:54,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:50:54,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19818c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54, skipping insertion in model container [2020-10-19 18:50:54,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:50:54,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:50:54,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:50:54,612 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:50:54,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:50:54,640 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:50:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54 WrapperNode [2020-10-19 18:50:54,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:50:54,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:50:54,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:50:54,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:50:54,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:50:54,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:50:54,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:50:54,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:50:54,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (1/1) ... [2020-10-19 18:50:54,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:50:54,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:50:54,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:50:54,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:50:54,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:50:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-19 18:50:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-19 18:50:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:50:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:50:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:50:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:50:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:50:55,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:50:55,019 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:50:55,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:50:55 BoogieIcfgContainer [2020-10-19 18:50:55,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:50:55,021 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:50:55,022 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:50:55,025 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:50:55,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:50:55,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:50:54" (1/3) ... [2020-10-19 18:50:55,027 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ab1c514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:50:55, skipping insertion in model container [2020-10-19 18:50:55,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:50:55,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:50:54" (2/3) ... [2020-10-19 18:50:55,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ab1c514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:50:55, skipping insertion in model container [2020-10-19 18:50:55,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:50:55,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:50:55" (3/3) ... [2020-10-19 18:50:55,030 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex3.i [2020-10-19 18:50:55,091 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:50:55,092 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:50:55,092 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:50:55,092 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:50:55,092 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:50:55,092 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:50:55,093 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:50:55,093 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:50:55,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 18:50:55,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:50:55,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:50:55,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:50:55,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:50:55,160 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:50:55,160 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:50:55,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 18:50:55,162 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:50:55,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:50:55,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:50:55,163 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:50:55,163 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:50:55,173 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 5#L20-2true [2020-10-19 18:50:55,173 INFO L796 eck$LassoCheckResult]: Loop: 5#L20-2true assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 13#L23true call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 4#recENTRYtrue ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 9#L9true assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 15#recFINALtrue assume true; 12#recEXITtrue >#30#return; 11#L23-1true main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 5#L20-2true [2020-10-19 18:50:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:55,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2020-10-19 18:50:55,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:55,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306655121] [2020-10-19 18:50:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,309 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2039113776, now seen corresponding path program 1 times [2020-10-19 18:50:55,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:55,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309210003] [2020-10-19 18:50:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,420 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:55,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1009969970, now seen corresponding path program 1 times [2020-10-19 18:50:55,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:55,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307685858] [2020-10-19 18:50:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:55,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:55,519 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:55,954 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-19 18:50:56,076 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:50:56,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:50:56,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:50:56,078 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:50:56,078 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:50:56,078 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,078 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:50:56,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:50:56,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration1_Lasso [2020-10-19 18:50:56,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:50:56,079 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:50:56,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:56,454 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:50:56,460 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,601 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:50:56,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,656 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,710 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,713 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:50:56,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,741 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-19 18:50:56,742 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-19 18:50:56,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:50:56,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:50:56,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,910 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:56,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:56,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:56,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:56,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:56,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:56,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:56,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:56,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:56,961 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:50:56,971 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:50:56,971 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:56,977 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:50:56,978 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:50:56,978 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:50:56,979 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:57,016 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:50:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:50:57,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:50:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:50:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:50:57,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:50:57,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:50:57,289 INFO L384 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 [2020-10-19 18:50:57,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:50:57,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:50:57,300 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:50:57,301 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:50:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:50:57,366 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-19 18:50:57,368 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 7 states. [2020-10-19 18:50:57,514 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 7 states. Result 63 states and 77 transitions. Complement of second has 22 states. [2020-10-19 18:50:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-19 18:50:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:50:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 22 transitions. [2020-10-19 18:50:57,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 2 letters. Loop has 7 letters. [2020-10-19 18:50:57,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:57,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 9 letters. Loop has 7 letters. [2020-10-19 18:50:57,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:57,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 2 letters. Loop has 14 letters. [2020-10-19 18:50:57,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:57,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 77 transitions. [2020-10-19 18:50:57,549 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:50:57,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 35 states and 42 transitions. [2020-10-19 18:50:57,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-19 18:50:57,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-19 18:50:57,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 42 transitions. [2020-10-19 18:50:57,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:50:57,567 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-19 18:50:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 42 transitions. [2020-10-19 18:50:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-19 18:50:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 18:50:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-19 18:50:57,610 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-19 18:50:57,611 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-19 18:50:57,611 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:50:57,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 38 transitions. [2020-10-19 18:50:57,612 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:50:57,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:50:57,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:50:57,613 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:50:57,614 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:50:57,614 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 161#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 162#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 174#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 175#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 185#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 156#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 164#recENTRY [2020-10-19 18:50:57,614 INFO L796 eck$LassoCheckResult]: Loop: 164#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 154#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 155#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 164#recENTRY [2020-10-19 18:50:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash 557607690, now seen corresponding path program 1 times [2020-10-19 18:50:57,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:57,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995726342] [2020-10-19 18:50:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:57,648 INFO L82 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2020-10-19 18:50:57,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:57,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115054226] [2020-10-19 18:50:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,662 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1242807987, now seen corresponding path program 2 times [2020-10-19 18:50:57,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:57,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672989957] [2020-10-19 18:50:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:57,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:57,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:58,171 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-19 18:50:58,497 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-19 18:50:58,557 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:50:58,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:50:58,557 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:50:58,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:50:58,558 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:50:58,558 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:58,558 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:50:58,558 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:50:58,558 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration2_Lasso [2020-10-19 18:50:58,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:50:58,558 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:50:58,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:50:58,970 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:50:58,970 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:58,988 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:58,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:58,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:58,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:58,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:58,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:58,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:58,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:58,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:59,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:59,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:59,037 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:59,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:59,074 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:59,076 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:59,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:59,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:59,104 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,131 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:50:59,131 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:50:59,141 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:50:59,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:50:59,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:50:59,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,246 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:50:59,246 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:50:59,255 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,301 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-10-19 18:50:59,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,305 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2020-10-19 18:50:59,305 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:50:59,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:50:59,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:50:59,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:50:59,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:50:59,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:50:59,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:50:59,365 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:50:59,365 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,372 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:50:59,382 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-19 18:50:59,383 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:50:59,387 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:50:59,390 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:50:59,390 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:50:59,390 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_1) = 2*v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_1 + 1 Supporting invariants [] [2020-10-19 18:50:59,421 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-10-19 18:50:59,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:50:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:50:59,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:50:59,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:50:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:50:59,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:50:59,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:50:59,518 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 36 treesize of output 20 [2020-10-19 18:50:59,519 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:50:59,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:50:59,525 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:50:59,525 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2020-10-19 18:50:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:50:59,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-19 18:50:59,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-10-19 18:50:59,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 47 states and 56 transitions. Complement of second has 17 states. [2020-10-19 18:50:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-19 18:50:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:50:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2020-10-19 18:50:59,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:50:59,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:59,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:50:59,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:59,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:50:59,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:50:59,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 56 transitions. [2020-10-19 18:50:59,639 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:50:59,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 50 transitions. [2020-10-19 18:50:59,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-19 18:50:59,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-19 18:50:59,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2020-10-19 18:50:59,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:50:59,642 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-19 18:50:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2020-10-19 18:50:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-19 18:50:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:50:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-19 18:50:59,649 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-19 18:50:59,649 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-19 18:50:59,649 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:50:59,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 46 transitions. [2020-10-19 18:50:59,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:50:59,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:50:59,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:50:59,652 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:50:59,652 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:50:59,653 INFO L794 eck$LassoCheckResult]: Stem: 317#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 310#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 311#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 329#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 339#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 338#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 309#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 314#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 315#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 343#recFINAL assume true; 322#recEXIT >#28#return; 323#L15-1 #res := #t~ret5;havoc #t~ret5; 337#recFINAL assume true; 332#recEXIT >#30#return; 318#L23-1 [2020-10-19 18:50:59,653 INFO L796 eck$LassoCheckResult]: Loop: 318#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 319#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 326#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 327#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 334#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 336#recFINAL assume true; 341#recEXIT >#30#return; 318#L23-1 [2020-10-19 18:50:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1969157627, now seen corresponding path program 1 times [2020-10-19 18:50:59,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:59,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830726733] [2020-10-19 18:50:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,706 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash -523709736, now seen corresponding path program 2 times [2020-10-19 18:50:59,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:59,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186898355] [2020-10-19 18:50:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,749 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:50:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:50:59,750 INFO L82 PathProgramCache]: Analyzing trace with hash 931270558, now seen corresponding path program 1 times [2020-10-19 18:50:59,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:50:59,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911240947] [2020-10-19 18:50:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:50:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:50:59,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:50:59,815 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:00,056 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-19 18:51:00,326 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 18:51:00,692 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-19 18:51:00,755 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:51:00,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:51:00,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:51:00,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:51:00,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:51:00,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:00,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:51:00,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:51:00,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration3_Lasso [2020-10-19 18:51:00,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:51:00,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:51:00,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:00,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:00,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:00,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:00,892 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-19 18:51:01,009 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-19 18:51:01,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:01,357 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:51:01,357 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:01,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:01,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:01,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:01,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:01,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:01,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:01,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:01,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:01,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:01,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:01,430 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:01,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:01,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:01,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:01,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:01,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:01,438 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:01,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:01,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:01,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:01,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:01,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:01,476 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:01,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:01,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:01,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:01,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:01,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:01,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:01,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:01,522 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:01,522 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:01,534 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:51:01,548 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-19 18:51:01,549 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:01,551 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:51:01,553 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:51:01,554 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:51:01,554 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_#t~ret9, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_#t~ret9 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-19 18:51:01,582 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:51:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:51:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:01,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:51:01,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:01,745 INFO L384 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 [2020-10-19 18:51:01,747 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:01,751 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:01,752 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:01,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:51:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:01,772 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2020-10-19 18:51:01,772 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 46 transitions. cyclomatic complexity: 11 Second operand 8 states. [2020-10-19 18:51:01,913 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 46 transitions. cyclomatic complexity: 11. Second operand 8 states. Result 130 states and 152 transitions. Complement of second has 21 states. [2020-10-19 18:51:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-19 18:51:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-19 18:51:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 26 transitions. [2020-10-19 18:51:01,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 14 letters. Loop has 7 letters. [2020-10-19 18:51:01,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:01,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-19 18:51:01,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:01,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 14 letters. Loop has 14 letters. [2020-10-19 18:51:01,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:01,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 152 transitions. [2020-10-19 18:51:01,923 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:51:01,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 90 states and 105 transitions. [2020-10-19 18:51:01,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2020-10-19 18:51:01,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2020-10-19 18:51:01,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 105 transitions. [2020-10-19 18:51:01,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:51:01,928 INFO L691 BuchiCegarLoop]: Abstraction has 90 states and 105 transitions. [2020-10-19 18:51:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 105 transitions. [2020-10-19 18:51:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-19 18:51:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-19 18:51:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2020-10-19 18:51:01,939 INFO L714 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2020-10-19 18:51:01,940 INFO L594 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2020-10-19 18:51:01,940 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:51:01,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 96 transitions. [2020-10-19 18:51:01,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:51:01,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:51:01,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:51:01,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:51:01,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:51:01,944 INFO L794 eck$LassoCheckResult]: Stem: 613#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 603#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 604#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 633#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 634#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 639#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 629#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 638#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 644#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 641#recFINAL assume true; 637#recEXIT >#28#return; 636#L15-1 #res := #t~ret5;havoc #t~ret5; 635#recFINAL assume true; 632#recEXIT >#30#return; 631#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 618#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 622#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 623#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 673#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 609#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 608#recENTRY [2020-10-19 18:51:01,945 INFO L796 eck$LassoCheckResult]: Loop: 608#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 611#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 610#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 608#recENTRY [2020-10-19 18:51:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash -801242957, now seen corresponding path program 2 times [2020-10-19 18:51:01,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:01,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581574404] [2020-10-19 18:51:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:01,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:01,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:01,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:01,984 INFO L82 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2020-10-19 18:51:01,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:01,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223796988] [2020-10-19 18:51:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:01,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:01,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:01,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1599299332, now seen corresponding path program 3 times [2020-10-19 18:51:01,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:01,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690469300] [2020-10-19 18:51:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:02,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:02,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:02,058 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:02,409 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 18:51:03,069 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-10-19 18:51:03,577 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-19 18:51:03,711 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:51:03,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:51:03,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:51:03,712 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:51:03,712 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:51:03,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:03,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:51:03,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:51:03,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration4_Lasso [2020-10-19 18:51:03,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:51:03,714 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:51:03,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:03,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:04,294 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:51:04,295 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:04,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,366 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,393 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,418 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,444 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:04,444 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:04,448 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,475 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,531 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,554 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,557 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:04,580 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,608 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,608 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,641 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:04,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:04,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:04,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,701 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-19 18:51:04,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,704 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2020-10-19 18:51:04,704 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:04,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:04,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,744 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:04,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:04,751 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:04,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:04,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:04,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:04,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:04,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:04,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:04,787 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:51:04,799 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-19 18:51:04,799 INFO L444 ModelExtractionUtils]: 0 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:04,801 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:51:04,805 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-19 18:51:04,805 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:51:04,806 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select old(#memory_int) rec_#in~p.base) rec_#in~p.offset)_2) = 2*v_rep(select (select old(#memory_int) rec_#in~p.base) rec_#in~p.offset)_2 + 1 Supporting invariants [1*v_rep(select (select old(#memory_int) rec_#in~p.base) rec_#in~p.offset)_2 - 1*v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_2 >= 0] [2020-10-19 18:51:04,830 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-10-19 18:51:04,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:51:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:04,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:51:04,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:04,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:51:04,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:04,966 INFO L384 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 23 treesize of output 15 [2020-10-19 18:51:04,970 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:04,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:04,976 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:04,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2020-10-19 18:51:05,013 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 36 treesize of output 20 [2020-10-19 18:51:05,013 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:05,019 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:23 [2020-10-19 18:51:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:05,040 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-19 18:51:05,041 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-19 18:51:05,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 106 states and 124 transitions. Complement of second has 17 states. [2020-10-19 18:51:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-19 18:51:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:51:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2020-10-19 18:51:05,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-19 18:51:05,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:05,196 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:51:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:05,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:51:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:05,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:05,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:51:05,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:05,315 INFO L384 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 23 treesize of output 15 [2020-10-19 18:51:05,316 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,321 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:05,322 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,322 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2020-10-19 18:51:05,362 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 36 treesize of output 20 [2020-10-19 18:51:05,364 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:05,369 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:23 [2020-10-19 18:51:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:05,388 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-19 18:51:05,388 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-19 18:51:05,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 106 states and 124 transitions. Complement of second has 17 states. [2020-10-19 18:51:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-19 18:51:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:51:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2020-10-19 18:51:05,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-19 18:51:05,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:05,555 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:51:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:05,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:51:05,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:05,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:05,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:51:05,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:05,688 INFO L384 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 23 treesize of output 15 [2020-10-19 18:51:05,689 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:05,694 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2020-10-19 18:51:05,729 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 36 treesize of output 20 [2020-10-19 18:51:05,730 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:05,736 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:05,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:23 [2020-10-19 18:51:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:05,763 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-19 18:51:05,763 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-19 18:51:05,941 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 154 states and 179 transitions. Complement of second has 19 states. [2020-10-19 18:51:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-19 18:51:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:51:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-19 18:51:05,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-19 18:51:05,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:05,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 23 letters. Loop has 3 letters. [2020-10-19 18:51:05,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:05,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 20 letters. Loop has 6 letters. [2020-10-19 18:51:05,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:05,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 179 transitions. [2020-10-19 18:51:05,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:51:05,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 110 states and 135 transitions. [2020-10-19 18:51:05,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2020-10-19 18:51:05,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-19 18:51:05,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 135 transitions. [2020-10-19 18:51:05,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:51:05,956 INFO L691 BuchiCegarLoop]: Abstraction has 110 states and 135 transitions. [2020-10-19 18:51:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 135 transitions. [2020-10-19 18:51:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 74. [2020-10-19 18:51:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 18:51:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-19 18:51:05,967 INFO L714 BuchiCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-19 18:51:05,967 INFO L594 BuchiCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-19 18:51:05,967 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:51:05,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 87 transitions. [2020-10-19 18:51:05,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:51:05,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:51:05,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:51:05,971 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:51:05,971 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:51:05,971 INFO L794 eck$LassoCheckResult]: Stem: 1378#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1369#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 1370#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1386#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1389#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1395#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1391#recFINAL assume true; 1385#recEXIT >#30#return; 1381#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 1383#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1374#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1373#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1375#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 1365#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 1392#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1364#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1366#recFINAL assume true; 1390#recEXIT >#28#return; 1419#L15-1 #res := #t~ret5;havoc #t~ret5; 1414#recFINAL assume true; 1396#recEXIT >#30#return; 1379#L23-1 [2020-10-19 18:51:05,972 INFO L796 eck$LassoCheckResult]: Loop: 1379#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 1380#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1416#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1420#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1415#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1417#recFINAL assume true; 1421#recEXIT >#30#return; 1379#L23-1 [2020-10-19 18:51:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1572162950, now seen corresponding path program 4 times [2020-10-19 18:51:05,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:05,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006208414] [2020-10-19 18:51:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:05,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:05,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:06,003 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:06,004 INFO L82 PathProgramCache]: Analyzing trace with hash -523709736, now seen corresponding path program 3 times [2020-10-19 18:51:06,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:06,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420634999] [2020-10-19 18:51:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:06,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:06,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:06,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1341076915, now seen corresponding path program 5 times [2020-10-19 18:51:06,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:06,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320145872] [2020-10-19 18:51:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:06,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:06,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:06,059 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:06,314 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-19 18:51:06,697 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 18:51:07,469 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2020-10-19 18:51:07,590 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:51:07,590 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:51:07,590 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:51:07,591 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:51:07,591 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:51:07,591 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:07,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:51:07,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:51:07,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration5_Lasso [2020-10-19 18:51:07,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:51:07,591 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:51:07,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:07,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:07,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:07,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:07,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:07,746 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-19 18:51:08,150 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-10-19 18:51:08,274 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:51:08,274 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:08,283 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:08,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:08,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,285 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:08,285 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:08,289 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:08,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:08,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:08,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:08,314 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:08,317 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:08,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:08,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:08,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:08,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:08,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:08,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:08,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:08,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:08,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:08,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:08,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:08,370 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:08,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,394 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-19 18:51:08,394 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:51:08,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,407 INFO L401 nArgumentSynthesizer]: We have 28 Motzkin's Theorem applications. [2020-10-19 18:51:08,408 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-19 18:51:08,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:08,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:08,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:08,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:08,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:08,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:08,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:08,468 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:51:08,489 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-19 18:51:08,489 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:08,493 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:51:08,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-10-19 18:51:08,495 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:51:08,495 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [2*ULTIMATE.start_main_~i~0 - 1 >= 0, -1*ULTIMATE.start_main_#t~ret9 - 1 >= 0] [2020-10-19 18:51:08,528 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2020-10-19 18:51:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:08,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:51:08,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:08,644 INFO L384 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 [2020-10-19 18:51:08,645 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:08,647 INFO L384 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 [2020-10-19 18:51:08,648 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:08,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:08,661 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:51:08,661 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:19 [2020-10-19 18:51:08,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:08,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:08,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:08,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:51:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:08,815 INFO L384 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 [2020-10-19 18:51:08,815 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:08,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:08,819 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:08,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:51:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:08,839 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 6 loop predicates [2020-10-19 18:51:08,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 11 states. [2020-10-19 18:51:09,135 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 11 states. Result 117 states and 139 transitions. Complement of second has 28 states. [2020-10-19 18:51:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 5 stem states 5 non-accepting loop states 2 accepting loop states [2020-10-19 18:51:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:51:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 26 transitions. [2020-10-19 18:51:09,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-19 18:51:09,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:09,141 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:51:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:09,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:51:09,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:09,265 INFO L384 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 [2020-10-19 18:51:09,266 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,269 INFO L384 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 [2020-10-19 18:51:09,269 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:09,282 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:51:09,282 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:19 [2020-10-19 18:51:09,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,309 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:09,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:51:09,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:09,426 INFO L384 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 [2020-10-19 18:51:09,428 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:09,433 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:51:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:09,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 6 loop predicates [2020-10-19 18:51:09,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 11 states. [2020-10-19 18:51:09,757 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 11 states. Result 118 states and 139 transitions. Complement of second has 28 states. [2020-10-19 18:51:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 5 stem states 5 non-accepting loop states 2 accepting loop states [2020-10-19 18:51:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:51:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 26 transitions. [2020-10-19 18:51:09,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-19 18:51:09,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:09,761 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:51:09,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:09,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:51:09,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:09,893 INFO L384 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 [2020-10-19 18:51:09,894 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,899 INFO L384 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 [2020-10-19 18:51:09,900 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:09,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:09,916 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:51:09,916 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:19 [2020-10-19 18:51:09,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:09,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:51:09,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:10,075 INFO L384 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 [2020-10-19 18:51:10,076 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:10,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:10,080 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:10,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:51:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:51:10,101 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 6 loop predicates [2020-10-19 18:51:10,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 11 states. [2020-10-19 18:51:10,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 11 states. Result 143 states and 169 transitions. Complement of second has 35 states. [2020-10-19 18:51:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 5 stem states 5 non-accepting loop states 2 accepting loop states [2020-10-19 18:51:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:51:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 28 transitions. [2020-10-19 18:51:10,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 28 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-19 18:51:10,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:10,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 28 transitions. Stem has 28 letters. Loop has 7 letters. [2020-10-19 18:51:10,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:10,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 28 transitions. Stem has 21 letters. Loop has 14 letters. [2020-10-19 18:51:10,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:10,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 169 transitions. [2020-10-19 18:51:10,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:51:10,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 93 states and 108 transitions. [2020-10-19 18:51:10,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-10-19 18:51:10,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-19 18:51:10,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 108 transitions. [2020-10-19 18:51:10,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:51:10,453 INFO L691 BuchiCegarLoop]: Abstraction has 93 states and 108 transitions. [2020-10-19 18:51:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 108 transitions. [2020-10-19 18:51:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-10-19 18:51:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-19 18:51:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-10-19 18:51:10,461 INFO L714 BuchiCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-19 18:51:10,461 INFO L594 BuchiCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-19 18:51:10,462 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:51:10,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 92 transitions. [2020-10-19 18:51:10,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:51:10,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:51:10,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:51:10,465 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:51:10,465 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:51:10,465 INFO L794 eck$LassoCheckResult]: Stem: 2294#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2284#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 2285#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 2282#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 2293#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2281#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 2283#recFINAL assume true; 2300#recEXIT >#30#return; 2298#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 2297#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 2279#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 2320#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2278#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 2280#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 2304#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2343#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 2348#recFINAL assume true; 2330#recEXIT >#28#return; 2327#L15-1 #res := #t~ret5;havoc #t~ret5; 2324#recFINAL assume true; 2319#recEXIT >#30#return; 2309#L23-1 [2020-10-19 18:51:10,465 INFO L796 eck$LassoCheckResult]: Loop: 2309#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 2313#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 2308#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 2311#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2321#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~post4;havoc #t~mem3; 2317#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 2318#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2345#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 2346#recFINAL assume true; 2316#recEXIT >#28#return; 2314#L15-1 #res := #t~ret5;havoc #t~ret5; 2312#recFINAL assume true; 2307#recEXIT >#30#return; 2309#L23-1 [2020-10-19 18:51:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1572162950, now seen corresponding path program 6 times [2020-10-19 18:51:10,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:10,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099665727] [2020-10-19 18:51:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 773083116, now seen corresponding path program 1 times [2020-10-19 18:51:10,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:10,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035768354] [2020-10-19 18:51:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1940004217, now seen corresponding path program 7 times [2020-10-19 18:51:10,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:51:10,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120125983] [2020-10-19 18:51:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:51:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:51:10,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:51:10,559 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:51:10,759 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 18:51:11,043 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-19 18:51:11,424 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-19 18:51:12,143 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2020-10-19 18:51:12,264 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:51:12,264 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:51:12,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:51:12,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:51:12,264 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:51:12,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:12,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:51:12,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:51:12,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration6_Lasso [2020-10-19 18:51:12,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:51:12,265 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:51:12,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,406 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-19 18:51:12,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:51:12,828 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-10-19 18:51:12,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:51:12,946 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:12,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:12,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:12,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:12,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:12,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:12,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:12,954 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:12,957 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:12,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:12,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:12,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:12,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:12,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:12,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:12,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:12,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:12,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,016 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:13,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,072 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-19 18:51:13,072 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:51:13,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,083 INFO L401 nArgumentSynthesizer]: We have 28 Motzkin's Theorem applications. [2020-10-19 18:51:13,083 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-19 18:51:13,108 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,133 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,139 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,166 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,174 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:51:13,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:51:13,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:51:13,199 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:51:13,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,253 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:51:13,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:51:13,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:51:13,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:51:13,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:51:13,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:51:13,258 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:51:13,267 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:51:13,280 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-19 18:51:13,280 INFO L444 ModelExtractionUtils]: 7 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:51:13,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:51:13,285 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:51:13,286 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:51:13,286 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_#t~ret9, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_#t~ret9 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-19 18:51:13,314 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:51:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:51:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:13,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:51:13,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:13,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:51:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:51:13,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:51:13,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:51:13,470 INFO L384 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 [2020-10-19 18:51:13,474 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:51:13,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:51:13,492 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:51:13,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-19 18:51:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:51:13,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-19 18:51:13,565 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 92 transitions. cyclomatic complexity: 18 Second operand 9 states. [2020-10-19 18:51:13,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 92 transitions. cyclomatic complexity: 18. Second operand 9 states. Result 146 states and 171 transitions. Complement of second has 24 states. [2020-10-19 18:51:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-19 18:51:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 18:51:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2020-10-19 18:51:13,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 21 letters. Loop has 13 letters. [2020-10-19 18:51:13,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:13,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 34 letters. Loop has 13 letters. [2020-10-19 18:51:13,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:13,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 21 letters. Loop has 26 letters. [2020-10-19 18:51:13,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:51:13,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 171 transitions. [2020-10-19 18:51:13,719 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:51:13,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 0 states and 0 transitions. [2020-10-19 18:51:13,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:51:13,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:51:13,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:51:13,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:51:13,721 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:51:13,721 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:51:13,721 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:51:13,721 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:51:13,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:51:13,722 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:51:13,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:51:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:51:13 BoogieIcfgContainer [2020-10-19 18:51:13,728 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:51:13,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:51:13,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:51:13,729 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:51:13,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:50:55" (3/4) ... [2020-10-19 18:51:13,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:51:13,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:51:13,735 INFO L168 Benchmark]: Toolchain (without parser) took 19343.27 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 486.0 MB). Free memory was 958.6 MB in the beginning and 1.5 GB in the end (delta: -500.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:51:13,736 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:51:13,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.40 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:51:13,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -199.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:51:13,737 INFO L168 Benchmark]: Boogie Preprocessor took 24.96 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. [2020-10-19 18:51:13,738 INFO L168 Benchmark]: RCFGBuilder took 265.91 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:51:13,738 INFO L168 Benchmark]: BuchiAutomizer took 18707.08 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 334.5 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -336.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:51:13,738 INFO L168 Benchmark]: Witness Printer took 5.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:51:13,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.40 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 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 88.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -199.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.96 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 265.91 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 18707.08 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 334.5 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -336.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function i and consists of 9 locations. One deterministic module has affine ranking function 2 * unknown-#memory_int-unknown[p][p] + 1 and consists of 5 locations. One deterministic module has affine ranking function aux-rec(op)-aux + i and consists of 8 locations. One deterministic module has affine ranking function aux-rec(op)-aux + i and consists of 9 locations. One nondeterministic module has affine ranking function 2 * \old(unknown-#memory_int-unknown)[p][p] + 1 and consists of 6 locations. One nondeterministic module has affine ranking function i and consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.6s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 13.8s. Construction of modules took 0.5s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 63 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 82 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/4 HoareTripleCheckerStatistics: 125 SDtfs, 147 SDslu, 138 SDs, 0 SdLazy, 411 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso6 LassoPreprocessingBenchmarks: Lassos: inital182 mio100 ax100 hnf98 lsp95 ukn63 mio100 lsp30 div100 bol100 ite100 ukn100 eq172 hnf89 smp94 dnf171 smp89 tf100 neg92 sie128 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 4 VariablesLoop: 5 DisjunctsStem: 4 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 28 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...