./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer --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 32bit --witnessprinter.graph.data.programhash 646417a8dd8807492175439f0c109786ec3887ae ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:27:37,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:27:37,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:27:37,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:27:37,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:27:37,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:27:37,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:27:37,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:27:37,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:27:37,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:27:37,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:27:37,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:27:37,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:27:37,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:27:37,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:27:37,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:27:37,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:27:37,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:27:37,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:27:37,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:27:37,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:27:37,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:27:37,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:27:37,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:27:37,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:27:37,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:27:37,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:27:37,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:27:37,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:27:37,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:27:37,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:27:37,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:27:37,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:27:37,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:27:37,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:27:37,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:27:37,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:27:37,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:27:37,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:27:37,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:27:37,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:27:37,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 15:27:37,391 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:27:37,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:27:37,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:27:37,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:27:37,392 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:27:37,392 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:27:37,392 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:27:37,392 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:27:37,393 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:27:37,393 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:27:37,393 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:27:37,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:27:37,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:27:37,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:27:37,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:27:37,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:27:37,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:27:37,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:27:37,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:27:37,396 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:27:37,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:27:37,396 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646417a8dd8807492175439f0c109786ec3887ae [2019-12-07 15:27:37,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:27:37,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:27:37,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:27:37,505 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:27:37,506 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:27:37,506 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2019-12-07 15:27:37,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/data/165a45cfa/fc308b4e5be84085a2580d0290652426/FLAG0370a7737 [2019-12-07 15:27:37,973 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:27:37,974 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2019-12-07 15:27:37,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/data/165a45cfa/fc308b4e5be84085a2580d0290652426/FLAG0370a7737 [2019-12-07 15:27:37,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/data/165a45cfa/fc308b4e5be84085a2580d0290652426 [2019-12-07 15:27:37,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:27:37,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:27:37,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:27:37,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:27:37,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:27:37,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:27:37" (1/1) ... [2019-12-07 15:27:38,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1718f54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:37, skipping insertion in model container [2019-12-07 15:27:38,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:27:37" (1/1) ... [2019-12-07 15:27:38,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:27:38,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:27:38,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:27:38,280 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:27:38,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:27:38,338 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:27:38,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38 WrapperNode [2019-12-07 15:27:38,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:27:38,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:27:38,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:27:38,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:27:38,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:27:38,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:27:38,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:27:38,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:27:38,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... [2019-12-07 15:27:38,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:27:38,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:27:38,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:27:38,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:27:38,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:27:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:27:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:27:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:27:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:27:38,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:27:38,639 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:27:38,640 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 15:27:38,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:27:38 BoogieIcfgContainer [2019-12-07 15:27:38,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:27:38,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:27:38,641 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:27:38,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:27:38,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:27:38,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:27:37" (1/3) ... [2019-12-07 15:27:38,645 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a83a2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:27:38, skipping insertion in model container [2019-12-07 15:27:38,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:27:38,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:27:38" (2/3) ... [2019-12-07 15:27:38,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a83a2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:27:38, skipping insertion in model container [2019-12-07 15:27:38,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:27:38,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:27:38" (3/3) ... [2019-12-07 15:27:38,647 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrspn-alloca-1.i [2019-12-07 15:27:38,682 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:27:38,682 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:27:38,682 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:27:38,682 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:27:38,683 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:27:38,683 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:27:38,683 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:27:38,683 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:27:38,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2019-12-07 15:27:38,706 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2019-12-07 15:27:38,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:38,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:38,711 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 15:27:38,711 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:27:38,711 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:27:38,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2019-12-07 15:27:38,712 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2019-12-07 15:27:38,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:38,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:38,713 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 15:27:38,713 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:27:38,718 INFO L794 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 13#L532true assume !(main_~length1~0 < 1); 18#L532-2true assume !(main_~length2~0 < 1); 9#L535-1true call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 25#L541-3true [2019-12-07 15:27:38,718 INFO L796 eck$LassoCheckResult]: Loop: 25#L541-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 22#L541-2true main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 25#L541-3true [2019-12-07 15:27:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-12-07 15:27:38,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:38,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163992084] [2019-12-07 15:27:38,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,822 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2019-12-07 15:27:38,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:38,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817057305] [2019-12-07 15:27:38,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2019-12-07 15:27:38,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:38,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423851585] [2019-12-07 15:27:38,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:38,865 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:39,054 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:27:39,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:27:39,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:27:39,055 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:27:39,055 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:27:39,055 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,055 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:27:39,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:27:39,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration1_Lasso [2019-12-07 15:27:39,055 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:27:39,056 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:27:39,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,389 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:27:39,393 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,397 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 [2019-12-07 15:27:39,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:39,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:39,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:39,402 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,406 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 [2019-12-07 15:27:39,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:39,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:39,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:39,409 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,413 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 [2019-12-07 15:27:39,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:39,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:39,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:39,416 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,419 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 [2019-12-07 15:27:39,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,423 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:39,424 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:39,427 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,430 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 [2019-12-07 15:27:39,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:39,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:39,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,441 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 [2019-12-07 15:27:39,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,445 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:39,445 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:39,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:39,453 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 [2019-12-07 15:27:39,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:39,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:39,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,465 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 [2019-12-07 15:27:39,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:39,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:39,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:39,469 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:39,473 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 [2019-12-07 15:27:39,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:39,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:39,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:39,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:39,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:39,480 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:39,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:27:39,506 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 15:27:39,506 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,510 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:27:39,515 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:27:39,515 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:27:39,516 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:27:39,533 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2019-12-07 15:27:39,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:39,567 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:27:39,568 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:39,578 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:27:39,578 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:39,606 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:27:39,607 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states. Second operand 3 states. [2019-12-07 15:27:39,648 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states.. Second operand 3 states. Result 60 states and 87 transitions. Complement of second has 7 states. [2019-12-07 15:27:39,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:27:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2019-12-07 15:27:39,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 15:27:39,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:39,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 15:27:39,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:39,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 15:27:39,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:39,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 87 transitions. [2019-12-07 15:27:39,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 15:27:39,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 20 states and 27 transitions. [2019-12-07 15:27:39,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-12-07 15:27:39,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-12-07 15:27:39,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2019-12-07 15:27:39,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:39,661 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-12-07 15:27:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2019-12-07 15:27:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 15:27:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 15:27:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-12-07 15:27:39,679 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-12-07 15:27:39,680 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-12-07 15:27:39,680 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:27:39,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2019-12-07 15:27:39,680 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 15:27:39,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:39,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:39,681 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:39,681 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:27:39,681 INFO L794 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 167#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 168#L532 assume !(main_~length1~0 < 1); 169#L532-2 assume !(main_~length2~0 < 1); 163#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 164#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 160#L541-4 main_~i~1 := 0; 161#L546-3 [2019-12-07 15:27:39,681 INFO L796 eck$LassoCheckResult]: Loop: 161#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 165#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 161#L546-3 [2019-12-07 15:27:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2019-12-07 15:27:39,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:39,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134411884] [2019-12-07 15:27:39,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,703 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2019-12-07 15:27:39,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:39,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472267692] [2019-12-07 15:27:39,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2019-12-07 15:27:39,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:39,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404922898] [2019-12-07 15:27:39,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:39,737 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:39,871 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-12-07 15:27:39,917 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:27:39,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:27:39,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:27:39,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:27:39,917 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:27:39,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:39,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:27:39,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:27:39,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration2_Lasso [2019-12-07 15:27:39,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:27:39,918 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:27:39,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:39,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:40,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:40,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:40,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:40,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:40,190 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:27:40,191 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,195 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 [2019-12-07 15:27:40,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:40,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:40,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:40,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,202 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 [2019-12-07 15:27:40,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:40,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:40,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:40,205 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,212 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 [2019-12-07 15:27:40,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,213 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:40,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,214 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:40,214 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:40,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,219 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 [2019-12-07 15:27:40,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,222 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,229 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 [2019-12-07 15:27:40,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:40,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:40,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:40,232 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,240 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 [2019-12-07 15:27:40,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,256 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 [2019-12-07 15:27:40,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,265 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 [2019-12-07 15:27:40,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:40,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:40,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:40,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:40,272 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 [2019-12-07 15:27:40,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,282 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 [2019-12-07 15:27:40,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,286 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,286 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,290 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:40,295 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 [2019-12-07 15:27:40,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:40,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:40,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:40,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:40,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:40,300 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:40,308 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:27:40,328 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 15:27:40,328 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:40,330 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:27:40,332 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 15:27:40,333 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:27:40,333 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_2) = -1*ULTIMATE.start_main_~i~1 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_2 Supporting invariants [1*ULTIMATE.start_main_~nondetString2~0.offset >= 0] [2019-12-07 15:27:40,347 INFO L297 tatePredicateManager]: 5 out of 7 supporting invariants were superfluous and have been removed [2019-12-07 15:27:40,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:27:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:40,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:27:40,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:40,387 WARN L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:27:40,388 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:40,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 15:27:40,399 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-12-07 15:27:40,441 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 31 states and 44 transitions. Complement of second has 7 states. [2019-12-07 15:27:40,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:27:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-12-07 15:27:40,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 15:27:40,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:40,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 2 letters. [2019-12-07 15:27:40,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:40,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 4 letters. [2019-12-07 15:27:40,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:40,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2019-12-07 15:27:40,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:27:40,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 21 states and 29 transitions. [2019-12-07 15:27:40,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 15:27:40,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-12-07 15:27:40,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 29 transitions. [2019-12-07 15:27:40,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:40,445 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-12-07 15:27:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 29 transitions. [2019-12-07 15:27:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 15:27:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:27:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2019-12-07 15:27:40,446 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-12-07 15:27:40,446 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-12-07 15:27:40,447 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 15:27:40,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 29 transitions. [2019-12-07 15:27:40,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:27:40,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:40,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:40,447 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:40,448 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:40,448 INFO L794 eck$LassoCheckResult]: Stem: 309#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 304#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 305#L532 assume !(main_~length1~0 < 1); 306#L532-2 assume !(main_~length2~0 < 1); 299#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 300#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 296#L541-4 main_~i~1 := 0; 297#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 303#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 293#L519-4 [2019-12-07 15:27:40,448 INFO L796 eck$LassoCheckResult]: Loop: 293#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 298#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 310#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 307#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 308#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 294#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 295#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 292#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 293#L519-4 [2019-12-07 15:27:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:40,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2019-12-07 15:27:40,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:40,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038413204] [2019-12-07 15:27:40,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:40,470 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:40,471 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 1 times [2019-12-07 15:27:40,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:40,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98965253] [2019-12-07 15:27:40,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:40,486 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1903570310, now seen corresponding path program 1 times [2019-12-07 15:27:40,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:40,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974328908] [2019-12-07 15:27:40,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:40,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974328908] [2019-12-07 15:27:40,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:40,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 15:27:40,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68419148] [2019-12-07 15:27:40,848 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-12-07 15:27:40,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:40,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:27:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:27:40,859 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. cyclomatic complexity: 11 Second operand 10 states. [2019-12-07 15:27:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:41,024 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2019-12-07 15:27:41,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 15:27:41,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 66 transitions. [2019-12-07 15:27:41,026 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2019-12-07 15:27:41,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 48 states and 64 transitions. [2019-12-07 15:27:41,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 15:27:41,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-12-07 15:27:41,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 64 transitions. [2019-12-07 15:27:41,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:41,028 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 64 transitions. [2019-12-07 15:27:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 64 transitions. [2019-12-07 15:27:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2019-12-07 15:27:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:27:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2019-12-07 15:27:41,032 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2019-12-07 15:27:41,032 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2019-12-07 15:27:41,032 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 15:27:41,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 44 transitions. [2019-12-07 15:27:41,032 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-12-07 15:27:41,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:41,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:41,033 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,033 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:41,033 INFO L794 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 407#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 408#L532 assume !(main_~length1~0 < 1); 409#L532-2 assume !(main_~length2~0 < 1); 401#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 402#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 419#L541-4 main_~i~1 := 0; 405#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 406#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 423#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 422#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 415#L522-5 [2019-12-07 15:27:41,033 INFO L796 eck$LassoCheckResult]: Loop: 415#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 420#L522-1 assume !cstrspn_#t~short7; 421#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 415#L522-5 [2019-12-07 15:27:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2087759941, now seen corresponding path program 1 times [2019-12-07 15:27:41,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331229866] [2019-12-07 15:27:41,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:41,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331229866] [2019-12-07 15:27:41,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:41,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 15:27:41,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223258341] [2019-12-07 15:27:41,102 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:27:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash 86558, now seen corresponding path program 1 times [2019-12-07 15:27:41,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376118783] [2019-12-07 15:27:41,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:41,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376118783] [2019-12-07 15:27:41,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:41,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:27:41,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510251040] [2019-12-07 15:27:41,110 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:27:41,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:41,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:27:41,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:27:41,111 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-12-07 15:27:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:41,118 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-12-07 15:27:41,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:27:41,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 44 transitions. [2019-12-07 15:27:41,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-12-07 15:27:41,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 44 transitions. [2019-12-07 15:27:41,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2019-12-07 15:27:41,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-12-07 15:27:41,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2019-12-07 15:27:41,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:41,120 INFO L688 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-12-07 15:27:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2019-12-07 15:27:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-12-07 15:27:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:27:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2019-12-07 15:27:41,122 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2019-12-07 15:27:41,122 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2019-12-07 15:27:41,122 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 15:27:41,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 43 transitions. [2019-12-07 15:27:41,123 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-12-07 15:27:41,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:41,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:41,123 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,123 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:41,123 INFO L794 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 483#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 484#L532 assume !(main_~length1~0 < 1); 485#L532-2 assume !(main_~length2~0 < 1); 478#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 479#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 493#L541-4 main_~i~1 := 0; 501#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 498#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 476#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 477#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 490#L522-5 [2019-12-07 15:27:41,123 INFO L796 eck$LassoCheckResult]: Loop: 490#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 486#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 487#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 490#L522-5 [2019-12-07 15:27:41,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2087759941, now seen corresponding path program 2 times [2019-12-07 15:27:41,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428979732] [2019-12-07 15:27:41,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:41,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428979732] [2019-12-07 15:27:41,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:41,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 15:27:41,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036404148] [2019-12-07 15:27:41,187 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:27:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 1 times [2019-12-07 15:27:41,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698002863] [2019-12-07 15:27:41,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,193 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:41,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:27:41,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:27:41,298 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. cyclomatic complexity: 16 Second operand 7 states. [2019-12-07 15:27:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:41,344 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2019-12-07 15:27:41,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:27:41,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2019-12-07 15:27:41,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 15:27:41,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 30 transitions. [2019-12-07 15:27:41,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-12-07 15:27:41,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-12-07 15:27:41,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-12-07 15:27:41,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:41,346 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-12-07 15:27:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-12-07 15:27:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-12-07 15:27:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 15:27:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2019-12-07 15:27:41,347 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-12-07 15:27:41,347 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-12-07 15:27:41,347 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 15:27:41,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2019-12-07 15:27:41,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 15:27:41,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:41,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:41,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,348 INFO L794 eck$LassoCheckResult]: Stem: 564#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 558#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 559#L532 assume !(main_~length1~0 < 1); 560#L532-2 assume !(main_~length2~0 < 1); 553#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 554#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 566#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 567#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 550#L541-4 main_~i~1 := 0; 551#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 557#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 547#L519-4 [2019-12-07 15:27:41,348 INFO L796 eck$LassoCheckResult]: Loop: 547#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 552#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 565#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 561#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 562#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 548#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 549#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 546#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 547#L519-4 [2019-12-07 15:27:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 1 times [2019-12-07 15:27:41,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951307085] [2019-12-07 15:27:41,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 2 times [2019-12-07 15:27:41,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391285938] [2019-12-07 15:27:41,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -164170776, now seen corresponding path program 1 times [2019-12-07 15:27:41,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370281245] [2019-12-07 15:27:41,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:27:41,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370281245] [2019-12-07 15:27:41,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:41,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 15:27:41,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820636320] [2019-12-07 15:27:41,652 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-12-07 15:27:41,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:27:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:27:41,653 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. cyclomatic complexity: 10 Second operand 10 states. [2019-12-07 15:27:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:41,756 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2019-12-07 15:27:41,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:27:41,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 49 transitions. [2019-12-07 15:27:41,757 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2019-12-07 15:27:41,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 45 transitions. [2019-12-07 15:27:41,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-12-07 15:27:41,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-12-07 15:27:41,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 45 transitions. [2019-12-07 15:27:41,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:41,758 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-12-07 15:27:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 45 transitions. [2019-12-07 15:27:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-12-07 15:27:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 15:27:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-12-07 15:27:41,760 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-12-07 15:27:41,760 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-12-07 15:27:41,760 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 15:27:41,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 44 transitions. [2019-12-07 15:27:41,761 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2019-12-07 15:27:41,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:41,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:41,761 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,761 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:41,761 INFO L794 eck$LassoCheckResult]: Stem: 653#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 647#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 648#L532 assume !(main_~length1~0 < 1); 649#L532-2 assume !(main_~length2~0 < 1); 641#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 642#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 658#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 659#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 636#L541-4 main_~i~1 := 0; 637#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 645#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 635#L519-4 [2019-12-07 15:27:41,761 INFO L796 eck$LassoCheckResult]: Loop: 635#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 638#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 662#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 661#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 654#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 655#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 666#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 664#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 632#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 633#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 634#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 635#L519-4 [2019-12-07 15:27:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 2 times [2019-12-07 15:27:41,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778369150] [2019-12-07 15:27:41,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,774 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash -898285594, now seen corresponding path program 1 times [2019-12-07 15:27:41,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004364995] [2019-12-07 15:27:41,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:41,784 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1809250353, now seen corresponding path program 1 times [2019-12-07 15:27:41,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:41,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289415892] [2019-12-07 15:27:41,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:27:41,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289415892] [2019-12-07 15:27:41,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294387154] [2019-12-07 15:27:41,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:27:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:41,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 15:27:41,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:41,902 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:27:41,903 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 15:27:41,903 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:41,913 INFO L614 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-12-07 15:27:41,913 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:27:41,913 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2019-12-07 15:27:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:27:41,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:27:41,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2019-12-07 15:27:41,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665017477] [2019-12-07 15:27:42,101 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-12-07 15:27:42,277 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-12-07 15:27:42,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:42,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:27:42,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:27:42,278 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. cyclomatic complexity: 13 Second operand 9 states. [2019-12-07 15:27:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:42,372 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-12-07 15:27:42,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:27:42,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2019-12-07 15:27:42,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 15:27:42,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 29 transitions. [2019-12-07 15:27:42,374 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-12-07 15:27:42,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-12-07 15:27:42,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 29 transitions. [2019-12-07 15:27:42,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:42,374 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-12-07 15:27:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 29 transitions. [2019-12-07 15:27:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-12-07 15:27:42,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 15:27:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-12-07 15:27:42,376 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-12-07 15:27:42,376 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-12-07 15:27:42,376 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 15:27:42,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2019-12-07 15:27:42,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 15:27:42,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:42,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:42,377 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:42,377 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:42,377 INFO L794 eck$LassoCheckResult]: Stem: 808#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 802#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 803#L532 assume !(main_~length1~0 < 1); 804#L532-2 assume !(main_~length2~0 < 1); 797#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 798#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 810#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 811#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 794#L541-4 main_~i~1 := 0; 795#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 799#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 800#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 801#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 793#L519-4 [2019-12-07 15:27:42,377 INFO L796 eck$LassoCheckResult]: Loop: 793#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 796#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 809#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 805#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 806#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 790#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 791#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 792#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 793#L519-4 [2019-12-07 15:27:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1066016806, now seen corresponding path program 1 times [2019-12-07 15:27:42,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:42,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026602241] [2019-12-07 15:27:42,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:42,396 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 3 times [2019-12-07 15:27:42,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:42,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423112101] [2019-12-07 15:27:42,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,406 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1875279350, now seen corresponding path program 1 times [2019-12-07 15:27:42,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:42,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922541442] [2019-12-07 15:27:42,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:42,431 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:42,636 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-12-07 15:27:43,004 WARN L192 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 112 [2019-12-07 15:27:43,128 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-12-07 15:27:43,130 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:27:43,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:27:43,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:27:43,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:27:43,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:27:43,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:43,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:27:43,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:27:43,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration8_Lasso [2019-12-07 15:27:43,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:27:43,131 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:27:43,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,497 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-12-07 15:27:43,627 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-12-07 15:27:43,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:43,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:44,066 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:27:44,066 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:44,069 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 [2019-12-07 15:27:44,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,073 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,077 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 [2019-12-07 15:27:44,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:44,083 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 [2019-12-07 15:27:44,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,086 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,089 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 [2019-12-07 15:27:44,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,092 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,096 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 [2019-12-07 15:27:44,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,098 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:44,098 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:44,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,105 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 [2019-12-07 15:27:44,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,108 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,112 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 [2019-12-07 15:27:44,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,115 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,119 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 [2019-12-07 15:27:44,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,122 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,126 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 [2019-12-07 15:27:44,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,128 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,129 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,133 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 [2019-12-07 15:27:44,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,136 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,139 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 [2019-12-07 15:27:44,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,142 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,145 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 [2019-12-07 15:27:44,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,147 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,147 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,151 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:44,155 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 [2019-12-07 15:27:44,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:44,157 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:44,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,163 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 [2019-12-07 15:27:44,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,164 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,164 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,166 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,169 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 [2019-12-07 15:27:44,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:44,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:44,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:44,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,175 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 [2019-12-07 15:27:44,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,177 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:44,177 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:44,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,183 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 [2019-12-07 15:27:44,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,184 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 15:27:44,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,192 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-12-07 15:27:44,192 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-12-07 15:27:44,209 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:44,213 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 [2019-12-07 15:27:44,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:44,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:44,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:44,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:44,223 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:44,223 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:44,248 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:27:44,285 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 15:27:44,285 INFO L444 ModelExtractionUtils]: 13 out of 55 variables were initially zero. Simplification set additionally 39 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:44,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:27:44,292 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:27:44,292 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:27:44,292 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~sc1~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3) = -1*ULTIMATE.start_cstrspn_~sc1~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3 Supporting invariants [] [2019-12-07 15:27:44,343 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2019-12-07 15:27:44,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:27:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:44,369 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:44,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:44,382 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:27:44,383 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:44,393 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 15:27:44,393 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-12-07 15:27:44,423 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 31 states and 40 transitions. Complement of second has 5 states. [2019-12-07 15:27:44,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:27:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-12-07 15:27:44,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 13 letters. Loop has 8 letters. [2019-12-07 15:27:44,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:44,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 8 letters. [2019-12-07 15:27:44,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:44,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 13 letters. Loop has 16 letters. [2019-12-07 15:27:44,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:44,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2019-12-07 15:27:44,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:44,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 35 transitions. [2019-12-07 15:27:44,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 15:27:44,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 15:27:44,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2019-12-07 15:27:44,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:27:44,426 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 15:27:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2019-12-07 15:27:44,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 15:27:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:27:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-12-07 15:27:44,428 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 15:27:44,428 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 15:27:44,428 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 15:27:44,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2019-12-07 15:27:44,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:44,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:44,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:44,428 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:44,428 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:44,429 INFO L794 eck$LassoCheckResult]: Stem: 1016#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1008#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1009#L532 assume !(main_~length1~0 < 1); 1010#L532-2 assume !(main_~length2~0 < 1); 1003#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1004#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1019#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1020#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 998#L541-4 main_~i~1 := 0; 999#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1005#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1006#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1007#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1000#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1001#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1017#L522-5 [2019-12-07 15:27:44,429 INFO L796 eck$LassoCheckResult]: Loop: 1017#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1011#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1012#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1017#L522-5 [2019-12-07 15:27:44,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2055034687, now seen corresponding path program 1 times [2019-12-07 15:27:44,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:44,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976159425] [2019-12-07 15:27:44,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,446 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 2 times [2019-12-07 15:27:44,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:44,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037125984] [2019-12-07 15:27:44,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,452 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:44,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1074579938, now seen corresponding path program 1 times [2019-12-07 15:27:44,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:44,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88654306] [2019-12-07 15:27:44,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:44,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:45,011 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 126 [2019-12-07 15:27:45,171 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-12-07 15:27:45,172 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:27:45,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:27:45,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:27:45,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:27:45,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:27:45,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:45,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:27:45,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:27:45,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration9_Lasso [2019-12-07 15:27:45,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:27:45,173 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:27:45,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,496 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2019-12-07 15:27:45,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:45,780 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-12-07 15:27:46,188 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-12-07 15:27:46,225 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:27:46,225 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,228 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 [2019-12-07 15:27:46,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:46,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:46,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:46,231 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,235 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 [2019-12-07 15:27:46,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,236 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:46,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:46,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:46,237 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,241 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 [2019-12-07 15:27:46,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,245 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:46,245 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:46,248 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,253 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 [2019-12-07 15:27:46,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:46,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:46,269 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:46,273 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 [2019-12-07 15:27:46,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,275 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:46,276 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:46,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,282 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 [2019-12-07 15:27:46,283 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,284 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:46,284 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:46,286 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,290 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 [2019-12-07 15:27:46,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:46,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:46,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:46,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:46,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:46,299 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:46,319 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:27:46,407 INFO L443 ModelExtractionUtils]: Simplification made 34 calls to the SMT solver. [2019-12-07 15:27:46,407 INFO L444 ModelExtractionUtils]: 23 out of 58 variables were initially zero. Simplification set additionally 30 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:46,410 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:27:46,413 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 15:27:46,413 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:27:46,413 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~s~0.offset, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_cstrspn_~s~0.offset + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_4 + 1*ULTIMATE.start_main_~length2~0 >= 0] [2019-12-07 15:27:46,478 INFO L297 tatePredicateManager]: 23 out of 25 supporting invariants were superfluous and have been removed [2019-12-07 15:27:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:46,508 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:27:46,509 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:46,519 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:27:46,519 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 15:27:46,519 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:46,531 INFO L614 ElimStorePlain]: treesize reduction 10, result has 65.5 percent of original size [2019-12-07 15:27:46,532 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:27:46,532 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:14, output treesize:10 [2019-12-07 15:27:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:46,554 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:27:46,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:46,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2019-12-07 15:27:46,566 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 5 states. [2019-12-07 15:27:46,614 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 54 states and 67 transitions. Complement of second has 7 states. [2019-12-07 15:27:46,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:27:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-12-07 15:27:46,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 15:27:46,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:46,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 15:27:46,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:46,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 15 letters. Loop has 6 letters. [2019-12-07 15:27:46,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:46,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2019-12-07 15:27:46,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:46,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 40 states and 50 transitions. [2019-12-07 15:27:46,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-12-07 15:27:46,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 15:27:46,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 50 transitions. [2019-12-07 15:27:46,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:27:46,617 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2019-12-07 15:27:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 50 transitions. [2019-12-07 15:27:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2019-12-07 15:27:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:27:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2019-12-07 15:27:46,619 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2019-12-07 15:27:46,619 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2019-12-07 15:27:46,619 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 15:27:46,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2019-12-07 15:27:46,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:46,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:46,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:46,620 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:46,620 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:46,620 INFO L794 eck$LassoCheckResult]: Stem: 1284#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1277#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1278#L532 assume !(main_~length1~0 < 1); 1279#L532-2 assume !(main_~length2~0 < 1); 1272#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1273#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1287#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1288#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1266#L541-4 main_~i~1 := 0; 1267#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1274#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1275#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1276#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1268#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1269#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1286#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1282#L522-1 assume !cstrspn_#t~short7; 1283#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 1262#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1263#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1264#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1265#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1270#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1285#L522-5 [2019-12-07 15:27:46,620 INFO L796 eck$LassoCheckResult]: Loop: 1285#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1280#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1281#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1285#L522-5 [2019-12-07 15:27:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:46,620 INFO L82 PathProgramCache]: Analyzing trace with hash -777149455, now seen corresponding path program 1 times [2019-12-07 15:27:46,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:46,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250253777] [2019-12-07 15:27:46,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:27:46,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250253777] [2019-12-07 15:27:46,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:27:46,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 15:27:46,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947502675] [2019-12-07 15:27:46,650 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:27:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 3 times [2019-12-07 15:27:46,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:46,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249533652] [2019-12-07 15:27:46,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:46,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:46,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:27:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:27:46,756 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 7 states. [2019-12-07 15:27:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:46,802 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-12-07 15:27:46,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:27:46,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2019-12-07 15:27:46,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:46,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 32 states and 39 transitions. [2019-12-07 15:27:46,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 15:27:46,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 15:27:46,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 39 transitions. [2019-12-07 15:27:46,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:27:46,803 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-12-07 15:27:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 39 transitions. [2019-12-07 15:27:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 15:27:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:27:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-12-07 15:27:46,805 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-12-07 15:27:46,805 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-12-07 15:27:46,805 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 15:27:46,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 39 transitions. [2019-12-07 15:27:46,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:46,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:46,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:46,806 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:46,806 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:46,806 INFO L794 eck$LassoCheckResult]: Stem: 1369#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1362#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1363#L532 assume !(main_~length1~0 < 1); 1364#L532-2 assume !(main_~length2~0 < 1); 1357#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1358#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1374#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1375#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1351#L541-4 main_~i~1 := 0; 1352#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1359#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1360#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1361#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1353#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1354#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1372#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1378#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1376#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 1347#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1348#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1349#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1350#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1355#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1370#L522-5 [2019-12-07 15:27:46,806 INFO L796 eck$LassoCheckResult]: Loop: 1370#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1365#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1366#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1370#L522-5 [2019-12-07 15:27:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1742810479, now seen corresponding path program 2 times [2019-12-07 15:27:46,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:46,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220855139] [2019-12-07 15:27:46,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:27:46,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220855139] [2019-12-07 15:27:46,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531056094] [2019-12-07 15:27:46,952 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:27:46,986 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:27:46,987 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:27:46,988 INFO L264 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-07 15:27:46,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:46,999 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:27:46,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 15:27:47,000 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,013 INFO L614 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2019-12-07 15:27:47,014 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,014 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:24 [2019-12-07 15:27:47,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:27:47,162 INFO L343 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2019-12-07 15:27:47,162 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2019-12-07 15:27:47,163 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,173 INFO L343 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2019-12-07 15:27:47,174 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2019-12-07 15:27:47,174 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,190 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:27:47,191 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-12-07 15:27:47,191 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:96, output treesize:79 [2019-12-07 15:27:47,280 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:27:47,280 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2019-12-07 15:27:47,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:27:47,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:27:47,282 INFO L534 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 15:27:47,299 INFO L614 ElimStorePlain]: treesize reduction 8, result has 82.6 percent of original size [2019-12-07 15:27:47,301 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 15:27:47,302 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 15:27:47,310 INFO L343 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2019-12-07 15:27:47,311 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 21 [2019-12-07 15:27:47,311 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,321 INFO L614 ElimStorePlain]: treesize reduction 8, result has 66.7 percent of original size [2019-12-07 15:27:47,322 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:27:47,322 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:3 [2019-12-07 15:27:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:47,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:27:47,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2019-12-07 15:27:47,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696263520] [2019-12-07 15:27:47,338 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:27:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:47,338 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 4 times [2019-12-07 15:27:47,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:47,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394028601] [2019-12-07 15:27:47,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:47,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:47,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:27:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 15:27:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2019-12-07 15:27:47,443 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. cyclomatic complexity: 12 Second operand 19 states. [2019-12-07 15:27:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:27:48,757 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2019-12-07 15:27:48,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 15:27:48,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 80 transitions. [2019-12-07 15:27:48,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:48,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 35 states and 42 transitions. [2019-12-07 15:27:48,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 15:27:48,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 15:27:48,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 42 transitions. [2019-12-07 15:27:48,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:27:48,758 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-12-07 15:27:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 42 transitions. [2019-12-07 15:27:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-12-07 15:27:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 15:27:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-12-07 15:27:48,760 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-12-07 15:27:48,760 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-12-07 15:27:48,760 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 15:27:48,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 41 transitions. [2019-12-07 15:27:48,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:27:48,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:27:48,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:27:48,761 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:27:48,761 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:27:48,761 INFO L794 eck$LassoCheckResult]: Stem: 1587#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1580#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1581#L532 assume !(main_~length1~0 < 1); 1582#L532-2 assume !(main_~length2~0 < 1); 1575#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1576#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1592#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1593#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1595#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1597#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1569#L541-4 main_~i~1 := 0; 1570#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1577#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1578#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1579#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1571#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1572#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1590#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1585#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1586#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6; 1565#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1566#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1567#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1568#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1573#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1588#L522-5 [2019-12-07 15:27:48,761 INFO L796 eck$LassoCheckResult]: Loop: 1588#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1583#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1584#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem6;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1588#L522-5 [2019-12-07 15:27:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1365761455, now seen corresponding path program 3 times [2019-12-07 15:27:48,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:48,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464743043] [2019-12-07 15:27:48,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,779 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 5 times [2019-12-07 15:27:48,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:48,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833427486] [2019-12-07 15:27:48,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,783 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1174254192, now seen corresponding path program 1 times [2019-12-07 15:27:48,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:27:48,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050152648] [2019-12-07 15:27:48,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:27:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:27:48,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:27:50,130 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 228 DAG size of output: 179 [2019-12-07 15:27:52,428 WARN L192 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 142 DAG size of output: 142 [2019-12-07 15:27:52,432 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:27:52,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:27:52,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:27:52,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:27:52,432 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:27:52,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:52,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:27:52,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:27:52,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration12_Lasso [2019-12-07 15:27:52,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:27:52,432 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:27:52,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:52,747 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 15:27:53,471 WARN L192 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 114 [2019-12-07 15:27:53,586 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2019-12-07 15:27:53,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:53,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:27:54,186 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-12-07 15:27:54,297 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-12-07 15:27:54,425 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:27:54,425 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,428 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 [2019-12-07 15:27:54,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,433 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 [2019-12-07 15:27:54,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,439 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 [2019-12-07 15:27:54,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,445 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 [2019-12-07 15:27:54,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,447 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,447 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,453 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 [2019-12-07 15:27:54,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,461 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 [2019-12-07 15:27:54,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,464 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,464 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,469 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 [2019-12-07 15:27:54,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,472 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,475 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 [2019-12-07 15:27:54,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,478 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,481 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 [2019-12-07 15:27:54,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,485 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/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 [2019-12-07 15:27:54,488 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 [2019-12-07 15:27:54,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,494 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 [2019-12-07 15:27:54,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:27:54,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:27:54,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:27:54,497 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,500 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 [2019-12-07 15:27:54,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,502 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,509 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 [2019-12-07 15:27:54,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,512 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,512 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,516 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,519 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 [2019-12-07 15:27:54,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,521 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2019-12-07 15:27:54,521 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2019-12-07 15:27:54,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,572 INFO L401 nArgumentSynthesizer]: We have 132 Motzkin's Theorem applications. [2019-12-07 15:27:54,572 INFO L402 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-12-07 15:27:54,710 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,715 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 [2019-12-07 15:27:54,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,717 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,717 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,722 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 [2019-12-07 15:27:54,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,730 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 [2019-12-07 15:27:54,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,732 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,732 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,734 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,737 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 [2019-12-07 15:27:54,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:27:54,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:27:54,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:27:54,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:27:54,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:27:54,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:27:54,758 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:27:54,803 INFO L443 ModelExtractionUtils]: Simplification made 28 calls to the SMT solver. [2019-12-07 15:27:54,804 INFO L444 ModelExtractionUtils]: 3 out of 37 variables were initially zero. Simplification set additionally 31 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52abc717-4f40-48e9-95c3-c5d18f4f535e/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:27:54,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:27:54,808 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:27:54,808 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:27:54,808 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrspn_~s2.base)_1, ULTIMATE.start_cstrspn_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrspn_~s2.base)_1 - 1*ULTIMATE.start_cstrspn_~s~0.offset Supporting invariants [] [2019-12-07 15:27:54,945 INFO L297 tatePredicateManager]: 33 out of 35 supporting invariants were superfluous and have been removed [2019-12-07 15:27:54,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:27:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:54,978 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:54,979 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:54,999 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:55,000 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:55,011 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2019-12-07 15:27:55,011 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 5 states. [2019-12-07 15:27:55,053 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 50 states and 58 transitions. Complement of second has 7 states. [2019-12-07 15:27:55,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:27:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-12-07 15:27:55,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 25 letters. Loop has 3 letters. [2019-12-07 15:27:55,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:55,054 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:27:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:55,096 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:55,097 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:55,116 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:55,117 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:55,128 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 2 loop predicates [2019-12-07 15:27:55,128 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 5 states. [2019-12-07 15:27:55,165 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 50 states and 58 transitions. Complement of second has 7 states. [2019-12-07 15:27:55,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:27:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-12-07 15:27:55,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 25 letters. Loop has 3 letters. [2019-12-07 15:27:55,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:55,166 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:27:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:27:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:55,197 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:55,198 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:27:55,217 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:27:55,218 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:27:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:27:55,229 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2019-12-07 15:27:55,229 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 5 states. [2019-12-07 15:27:55,269 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 49 states and 58 transitions. Complement of second has 6 states. [2019-12-07 15:27:55,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:27:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:27:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2019-12-07 15:27:55,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 25 letters. Loop has 3 letters. [2019-12-07 15:27:55,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:55,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 28 letters. Loop has 3 letters. [2019-12-07 15:27:55,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:55,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 25 letters. Loop has 6 letters. [2019-12-07 15:27:55,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:27:55,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 58 transitions. [2019-12-07 15:27:55,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:27:55,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:27:55,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:27:55,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:27:55,271 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-12-07 15:27:55,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:27:55,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:27:55,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 15:27:55,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:27:55 BoogieIcfgContainer [2019-12-07 15:27:55,275 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:27:55,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:27:55,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:27:55,276 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:27:55,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:27:38" (3/4) ... [2019-12-07 15:27:55,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:27:55,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:27:55,279 INFO L168 Benchmark]: Toolchain (without parser) took 17284.60 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 315.6 MB). Free memory was 938.1 MB in the beginning and 1.2 GB in the end (delta: -307.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:27:55,279 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:27:55,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:27:55,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:27:55,280 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:27:55,280 INFO L168 Benchmark]: RCFGBuilder took 247.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:27:55,280 INFO L168 Benchmark]: BuchiAutomizer took 16634.25 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 217.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -192.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:27:55,280 INFO L168 Benchmark]: Witness Printer took 2.51 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:27:55,281 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 247.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16634.25 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 217.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -192.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.51 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 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 #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] and consists of 5 locations. One deterministic module has affine ranking function -1 * sc1 + unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] and consists of 4 locations. One deterministic module has affine ranking function -1 * s + length2 and consists of 5 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[s2] + -1 * s and consists of 5 locations. 7 modules have a trivial ranking function, the largest among these consists of 19 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.6s and 13 iterations. TraceHistogramMax:2. Analysis of lassos took 13.9s. Construction of modules took 0.5s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 8. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 29 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 251 SDtfs, 669 SDslu, 589 SDs, 0 SdLazy, 671 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN0 SILU3 SILI1 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital411 mio100 ax107 hnf98 lsp82 ukn67 mio100 lsp43 div108 bol100 ite100 ukn100 eq179 hnf85 smp94 dnf376 smp60 tf100 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 193ms VariablesStem: 8 VariablesLoop: 4 DisjunctsStem: 4 DisjunctsLoop: 6 SupportingInvariants: 12 MotzkinApplications: 132 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...