./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 19:53:44,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 19:53:44,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 19:53:44,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 19:53:44,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 19:53:44,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 19:53:44,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 19:53:44,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 19:53:44,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 19:53:44,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 19:53:44,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 19:53:44,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 19:53:44,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 19:53:44,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 19:53:44,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 19:53:44,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 19:53:44,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 19:53:44,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 19:53:44,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 19:53:44,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 19:53:44,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 19:53:44,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 19:53:44,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 19:53:44,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 19:53:44,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 19:53:44,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 19:53:44,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 19:53:44,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 19:53:44,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 19:53:44,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 19:53:44,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 19:53:44,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 19:53:44,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 19:53:44,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 19:53:44,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 19:53:44,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 19:53:44,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 19:53:44,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 19:53:44,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 19:53:44,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 19:53:44,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 19:53:44,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 19:53:44,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 19:53:44,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 19:53:44,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 19:53:44,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 19:53:44,472 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 19:53:44,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 19:53:44,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 19:53:44,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 19:53:44,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 19:53:44,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 19:53:44,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 19:53:44,474 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 19:53:44,474 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 19:53:44,474 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 19:53:44,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 19:53:44,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 19:53:44,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 19:53:44,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 19:53:44,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 19:53:44,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 19:53:44,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 19:53:44,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:53:44,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 19:53:44,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 19:53:44,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 19:53:44,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 19:53:44,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2019-11-15 19:53:44,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 19:53:44,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 19:53:44,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 19:53:44,560 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 19:53:44,560 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 19:53:44,561 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2019-11-15 19:53:44,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/data/4ae036272/8708cd28b6f944cfb94793c491a8dd06/FLAG7a51c9b5f [2019-11-15 19:53:45,053 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 19:53:45,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/sv-benchmarks/c/memsafety-ext3/scopes3.c [2019-11-15 19:53:45,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/data/4ae036272/8708cd28b6f944cfb94793c491a8dd06/FLAG7a51c9b5f [2019-11-15 19:53:45,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/data/4ae036272/8708cd28b6f944cfb94793c491a8dd06 [2019-11-15 19:53:45,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 19:53:45,442 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 19:53:45,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 19:53:45,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 19:53:45,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 19:53:45,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19aa258b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45, skipping insertion in model container [2019-11-15 19:53:45,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,455 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 19:53:45,466 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 19:53:45,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:53:45,724 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 19:53:45,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:53:45,760 INFO L192 MainTranslator]: Completed translation [2019-11-15 19:53:45,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45 WrapperNode [2019-11-15 19:53:45,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 19:53:45,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 19:53:45,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 19:53:45,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 19:53:45,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... [2019-11-15 19:53:45,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 19:53:45,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 19:53:45,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 19:53:45,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 19:53:45,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:53:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 19:53:45,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 19:53:45,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 19:53:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 19:53:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 19:53:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 19:53:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 19:53:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 19:53:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 19:53:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 19:53:46,086 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 19:53:46,086 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-15 19:53:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:53:46 BoogieIcfgContainer [2019-11-15 19:53:46,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 19:53:46,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 19:53:46,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 19:53:46,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 19:53:46,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 07:53:45" (1/3) ... [2019-11-15 19:53:46,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22d46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:53:46, skipping insertion in model container [2019-11-15 19:53:46,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:53:45" (2/3) ... [2019-11-15 19:53:46,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22d46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:53:46, skipping insertion in model container [2019-11-15 19:53:46,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:53:46" (3/3) ... [2019-11-15 19:53:46,096 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes3.c [2019-11-15 19:53:46,106 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 19:53:46,113 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-15 19:53:46,125 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-15 19:53:46,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 19:53:46,146 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 19:53:46,146 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 19:53:46,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 19:53:46,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 19:53:46,147 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 19:53:46,147 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 19:53:46,147 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 19:53:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-15 19:53:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 19:53:46,173 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:46,174 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:46,176 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:46,182 INFO L82 PathProgramCache]: Analyzing trace with hash -197094901, now seen corresponding path program 1 times [2019-11-15 19:53:46,191 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:46,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100032116] [2019-11-15 19:53:46,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:46,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100032116] [2019-11-15 19:53:46,360 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:53:46,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:53:46,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899468365] [2019-11-15 19:53:46,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 19:53:46,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:46,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 19:53:46,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 19:53:46,395 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-15 19:53:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:46,492 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-15 19:53:46,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 19:53:46,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-15 19:53:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:46,503 INFO L225 Difference]: With dead ends: 26 [2019-11-15 19:53:46,503 INFO L226 Difference]: Without dead ends: 21 [2019-11-15 19:53:46,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 19:53:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-15 19:53:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-15 19:53:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-15 19:53:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-15 19:53:46,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2019-11-15 19:53:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:46,537 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-15 19:53:46,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 19:53:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-15 19:53:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 19:53:46,538 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:46,538 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:46,538 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:46,539 INFO L82 PathProgramCache]: Analyzing trace with hash -197095180, now seen corresponding path program 1 times [2019-11-15 19:53:46,539 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:46,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594515547] [2019-11-15 19:53:46,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:46,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594515547] [2019-11-15 19:53:46,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:53:46,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 19:53:46,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605914443] [2019-11-15 19:53:46,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:53:46,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:53:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:53:46,619 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2019-11-15 19:53:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:46,698 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-15 19:53:46,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 19:53:46,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 19:53:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:46,700 INFO L225 Difference]: With dead ends: 22 [2019-11-15 19:53:46,700 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 19:53:46,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 19:53:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 19:53:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-15 19:53:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 19:53:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-15 19:53:46,706 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2019-11-15 19:53:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:46,706 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-15 19:53:46,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:53:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-15 19:53:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 19:53:46,707 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:46,707 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:46,708 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash -197095125, now seen corresponding path program 1 times [2019-11-15 19:53:46,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:46,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626934651] [2019-11-15 19:53:46,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:46,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626934651] [2019-11-15 19:53:46,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:53:46,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:53:46,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897583485] [2019-11-15 19:53:46,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:53:46,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:46,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:53:46,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:53:46,815 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2019-11-15 19:53:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:46,866 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-15 19:53:46,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 19:53:46,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 19:53:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:46,868 INFO L225 Difference]: With dead ends: 16 [2019-11-15 19:53:46,868 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 19:53:46,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:53:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 19:53:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 19:53:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 19:53:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-15 19:53:46,872 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2019-11-15 19:53:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:46,872 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-15 19:53:46,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:53:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-15 19:53:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 19:53:46,873 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:46,874 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:46,874 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:46,874 INFO L82 PathProgramCache]: Analyzing trace with hash -197095126, now seen corresponding path program 1 times [2019-11-15 19:53:46,874 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:46,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083878568] [2019-11-15 19:53:46,875 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,875 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:46,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083878568] [2019-11-15 19:53:46,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:53:46,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:53:46,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469930323] [2019-11-15 19:53:46,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:53:46,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:46,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:53:46,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:53:46,931 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2019-11-15 19:53:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:46,980 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-15 19:53:46,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 19:53:46,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 19:53:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:46,982 INFO L225 Difference]: With dead ends: 15 [2019-11-15 19:53:46,982 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 19:53:46,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:53:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 19:53:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-15 19:53:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 19:53:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-15 19:53:46,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-15 19:53:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:46,986 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-15 19:53:46,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:53:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-15 19:53:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 19:53:46,987 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:46,987 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:46,987 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash -440617163, now seen corresponding path program 1 times [2019-11-15 19:53:46,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:46,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845220102] [2019-11-15 19:53:46,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,989 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:46,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:47,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845220102] [2019-11-15 19:53:47,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98085669] [2019-11-15 19:53:47,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:47,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 19:53:47,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:47,171 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:47,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-15 19:53:47,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134752567] [2019-11-15 19:53:47,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 19:53:47,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:47,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 19:53:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 19:53:47,175 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2019-11-15 19:53:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:47,235 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-15 19:53:47,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 19:53:47,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 19:53:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:47,237 INFO L225 Difference]: With dead ends: 20 [2019-11-15 19:53:47,237 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 19:53:47,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 19:53:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 19:53:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-15 19:53:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 19:53:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-15 19:53:47,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-11-15 19:53:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:47,242 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-15 19:53:47,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 19:53:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-15 19:53:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 19:53:47,243 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:47,243 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:47,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:47,444 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1004249772, now seen corresponding path program 2 times [2019-11-15 19:53:47,445 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:47,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091523251] [2019-11-15 19:53:47,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:47,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:47,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:47,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091523251] [2019-11-15 19:53:47,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949558133] [2019-11-15 19:53:47,535 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:47,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 19:53:47,597 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:47,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 19:53:47,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:47,617 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:47,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 19:53:47,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128277882] [2019-11-15 19:53:47,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 19:53:47,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:47,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 19:53:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 19:53:47,619 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2019-11-15 19:53:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:47,680 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-15 19:53:47,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 19:53:47,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-15 19:53:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:47,690 INFO L225 Difference]: With dead ends: 23 [2019-11-15 19:53:47,691 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 19:53:47,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-11-15 19:53:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 19:53:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-15 19:53:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 19:53:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-15 19:53:47,695 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-11-15 19:53:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:47,695 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-15 19:53:47,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 19:53:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-15 19:53:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 19:53:47,696 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:47,696 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:47,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:47,900 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:47,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1138822869, now seen corresponding path program 3 times [2019-11-15 19:53:47,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:47,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8201054] [2019-11-15 19:53:47,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:47,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:47,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:48,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8201054] [2019-11-15 19:53:48,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011581627] [2019-11-15 19:53:48,005 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:48,067 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 19:53:48,068 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:48,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 19:53:48,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:48,094 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:48,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-15 19:53:48,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896681894] [2019-11-15 19:53:48,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 19:53:48,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:48,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 19:53:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 19:53:48,096 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2019-11-15 19:53:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:48,162 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-15 19:53:48,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 19:53:48,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-15 19:53:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:48,163 INFO L225 Difference]: With dead ends: 26 [2019-11-15 19:53:48,163 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 19:53:48,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-11-15 19:53:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 19:53:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-15 19:53:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 19:53:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-15 19:53:48,168 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2019-11-15 19:53:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:48,168 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-15 19:53:48,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 19:53:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-15 19:53:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 19:53:48,169 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:48,170 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:48,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:48,374 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 727015860, now seen corresponding path program 4 times [2019-11-15 19:53:48,374 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:48,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594416513] [2019-11-15 19:53:48,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:48,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:48,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:48,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594416513] [2019-11-15 19:53:48,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087139846] [2019-11-15 19:53:48,509 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:48,567 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 19:53:48,567 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:48,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 19:53:48,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:48,603 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:48,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-11-15 19:53:48,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758153211] [2019-11-15 19:53:48,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 19:53:48,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 19:53:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 19:53:48,609 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2019-11-15 19:53:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:48,692 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-15 19:53:48,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 19:53:48,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-15 19:53:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:48,693 INFO L225 Difference]: With dead ends: 29 [2019-11-15 19:53:48,693 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 19:53:48,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-11-15 19:53:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 19:53:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-15 19:53:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-15 19:53:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-15 19:53:48,698 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-15 19:53:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:48,699 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-15 19:53:48,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 19:53:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-15 19:53:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 19:53:48,700 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:48,700 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:48,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:48,905 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash -988991883, now seen corresponding path program 5 times [2019-11-15 19:53:48,905 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:48,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082721459] [2019-11-15 19:53:48,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:48,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:48,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:49,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082721459] [2019-11-15 19:53:49,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090479874] [2019-11-15 19:53:49,046 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:49,119 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-15 19:53:49,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:49,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 19:53:49,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:49,147 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:49,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2019-11-15 19:53:49,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405803547] [2019-11-15 19:53:49,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 19:53:49,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 19:53:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-15 19:53:49,150 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2019-11-15 19:53:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:49,240 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-15 19:53:49,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 19:53:49,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-15 19:53:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:49,242 INFO L225 Difference]: With dead ends: 32 [2019-11-15 19:53:49,242 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 19:53:49,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2019-11-15 19:53:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 19:53:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-15 19:53:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 19:53:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-15 19:53:49,247 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-15 19:53:49,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:49,247 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-15 19:53:49,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 19:53:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-15 19:53:49,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 19:53:49,248 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:49,249 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:49,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:49,455 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:49,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:49,455 INFO L82 PathProgramCache]: Analyzing trace with hash 420060692, now seen corresponding path program 6 times [2019-11-15 19:53:49,456 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:49,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544753486] [2019-11-15 19:53:49,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:49,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:49,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:49,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544753486] [2019-11-15 19:53:49,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964422131] [2019-11-15 19:53:49,620 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:49,695 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-15 19:53:49,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:49,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 19:53:49,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:49,721 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:49,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2019-11-15 19:53:49,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459598700] [2019-11-15 19:53:49,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 19:53:49,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 19:53:49,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-11-15 19:53:49,723 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2019-11-15 19:53:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:49,815 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2019-11-15 19:53:49,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 19:53:49,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-15 19:53:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:49,816 INFO L225 Difference]: With dead ends: 35 [2019-11-15 19:53:49,816 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 19:53:49,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2019-11-15 19:53:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 19:53:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-15 19:53:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-15 19:53:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2019-11-15 19:53:49,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 26 [2019-11-15 19:53:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:49,822 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2019-11-15 19:53:49,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 19:53:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2019-11-15 19:53:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 19:53:49,823 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:49,823 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:50,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:50,035 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1505028587, now seen corresponding path program 7 times [2019-11-15 19:53:50,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:50,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473249940] [2019-11-15 19:53:50,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:50,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:50,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:50,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473249940] [2019-11-15 19:53:50,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854371271] [2019-11-15 19:53:50,183 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:50,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 19:53:50,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:50,298 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:50,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2019-11-15 19:53:50,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100926682] [2019-11-15 19:53:50,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 19:53:50,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:50,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 19:53:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-11-15 19:53:50,306 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 12 states. [2019-11-15 19:53:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:50,392 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2019-11-15 19:53:50,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 19:53:50,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2019-11-15 19:53:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:50,394 INFO L225 Difference]: With dead ends: 38 [2019-11-15 19:53:50,394 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 19:53:50,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2019-11-15 19:53:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 19:53:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-11-15 19:53:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 19:53:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-11-15 19:53:50,399 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 29 [2019-11-15 19:53:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:50,405 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-11-15 19:53:50,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 19:53:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-11-15 19:53:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 19:53:50,409 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:50,411 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:50,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:50,612 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1141435788, now seen corresponding path program 8 times [2019-11-15 19:53:50,612 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:50,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072382313] [2019-11-15 19:53:50,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:50,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:50,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:50,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072382313] [2019-11-15 19:53:50,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957218460] [2019-11-15 19:53:50,796 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:50,885 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 19:53:50,886 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:50,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 19:53:50,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:50,907 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:50,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2019-11-15 19:53:50,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429514806] [2019-11-15 19:53:50,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 19:53:50,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 19:53:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2019-11-15 19:53:50,909 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2019-11-15 19:53:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:50,989 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2019-11-15 19:53:50,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 19:53:50,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-15 19:53:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:50,990 INFO L225 Difference]: With dead ends: 41 [2019-11-15 19:53:50,990 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 19:53:50,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2019-11-15 19:53:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 19:53:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-15 19:53:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 19:53:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2019-11-15 19:53:50,995 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2019-11-15 19:53:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:50,996 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2019-11-15 19:53:50,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 19:53:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2019-11-15 19:53:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 19:53:50,997 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:50,997 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:51,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:51,207 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:51,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1255881291, now seen corresponding path program 9 times [2019-11-15 19:53:51,207 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:51,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475831334] [2019-11-15 19:53:51,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:51,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:51,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:53:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:51,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475831334] [2019-11-15 19:53:51,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37363388] [2019-11-15 19:53:51,367 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:51,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-15 19:53:51,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:53:51,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 19:53:51,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:53:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:53:51,518 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:53:51,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2019-11-15 19:53:51,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838348328] [2019-11-15 19:53:51,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 19:53:51,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:53:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 19:53:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2019-11-15 19:53:51,520 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2019-11-15 19:53:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:53:51,614 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-15 19:53:51,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 19:53:51,615 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2019-11-15 19:53:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:53:51,616 INFO L225 Difference]: With dead ends: 42 [2019-11-15 19:53:51,616 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 19:53:51,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2019-11-15 19:53:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 19:53:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-15 19:53:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 19:53:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-15 19:53:51,621 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-15 19:53:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:53:51,621 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-15 19:53:51,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 19:53:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-15 19:53:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 19:53:51,622 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:53:51,622 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:53:51,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:53:51,823 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 19:53:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:53:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash -497828140, now seen corresponding path program 10 times [2019-11-15 19:53:51,823 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:53:51,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380717028] [2019-11-15 19:53:51,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:51,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:53:51,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:53:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:53:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:53:51,982 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 19:53:51,982 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 19:53:52,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 07:53:52 BoogieIcfgContainer [2019-11-15 19:53:52,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 19:53:52,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 19:53:52,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 19:53:52,042 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 19:53:52,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:53:46" (3/4) ... [2019-11-15 19:53:52,044 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 19:53:52,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_25d4ae5b-355a-4e2f-b015-dde590f70cb9/bin/uautomizer/witness.graphml [2019-11-15 19:53:52,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 19:53:52,096 INFO L168 Benchmark]: Toolchain (without parser) took 6653.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -143.1 MB). Peak memory consumption was 62.9 MB. Max. memory is 11.5 GB. [2019-11-15 19:53:52,096 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:53:52,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 19:53:52,097 INFO L168 Benchmark]: Boogie Preprocessor took 38.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:53:52,097 INFO L168 Benchmark]: RCFGBuilder took 286.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-15 19:53:52,098 INFO L168 Benchmark]: TraceAbstraction took 5952.91 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-15 19:53:52,098 INFO L168 Benchmark]: Witness Printer took 52.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-11-15 19:53:52,100 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5952.91 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. * Witness Printer took 52.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=0, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=0, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=1, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=1, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=2, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=2, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=3, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=3, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=4, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=4, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=5, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=5, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=6, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=6, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=7, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=7, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=8, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=8, p={1:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={1:0}, i=9, p={1:0}] [L6] p[0] = 1 VAL [a={1:0}, i=9, p={1:0}] [L3] i++ [L3] COND FALSE !(i < 10) VAL [i=10, p={1:0}] [L8] p[0] = 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. Result: UNSAFE, OverallTime: 5.8s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 132 SDslu, 533 SDs, 0 SdLazy, 398 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 22 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 484 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 26952 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1172 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 0/810 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...