./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lh-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c08ad01fb17039d4f6c07f5a5bde8b7195d83520 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 08:22:41,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 08:22:41,801 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 08:22:41,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 08:22:41,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 08:22:41,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 08:22:41,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 08:22:41,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 08:22:41,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 08:22:41,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 08:22:41,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 08:22:41,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 08:22:41,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 08:22:41,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 08:22:41,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 08:22:41,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 08:22:41,817 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 08:22:41,819 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 08:22:41,820 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 08:22:41,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 08:22:41,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 08:22:41,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 08:22:41,824 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 08:22:41,825 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 08:22:41,825 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 08:22:41,825 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 08:22:41,826 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 08:22:41,827 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 08:22:41,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 08:22:41,828 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 08:22:41,828 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 08:22:41,828 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 08:22:41,829 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 08:22:41,829 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 08:22:41,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 08:22:41,830 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 08:22:41,830 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 08:22:41,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 08:22:41,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 08:22:41,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 08:22:41,841 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 08:22:41,841 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 08:22:41,841 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 08:22:41,841 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 08:22:41,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 08:22:41,842 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 08:22:41,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 08:22:41,843 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 08:22:41,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 08:22:41,844 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c08ad01fb17039d4f6c07f5a5bde8b7195d83520 [2018-12-08 08:22:41,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 08:22:41,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 08:22:41,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 08:22:41,875 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 08:22:41,875 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 08:22:41,875 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lh-reducer.c [2018-12-08 08:22:41,910 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/data/76d1978a4/1a3daf9dc63f4a93bccd0806ac6750fd/FLAG6ffa52bbf [2018-12-08 08:22:42,345 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 08:22:42,345 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lh-reducer.c [2018-12-08 08:22:42,349 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/data/76d1978a4/1a3daf9dc63f4a93bccd0806ac6750fd/FLAG6ffa52bbf [2018-12-08 08:22:42,357 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/data/76d1978a4/1a3daf9dc63f4a93bccd0806ac6750fd [2018-12-08 08:22:42,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 08:22:42,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 08:22:42,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 08:22:42,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 08:22:42,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 08:22:42,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650b367b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42, skipping insertion in model container [2018-12-08 08:22:42,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 08:22:42,383 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 08:22:42,518 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:22:42,524 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 08:22:42,589 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:22:42,598 INFO L195 MainTranslator]: Completed translation [2018-12-08 08:22:42,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42 WrapperNode [2018-12-08 08:22:42,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 08:22:42,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 08:22:42,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 08:22:42,599 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 08:22:42,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 08:22:42,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 08:22:42,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 08:22:42,617 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 08:22:42,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... [2018-12-08 08:22:42,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 08:22:42,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 08:22:42,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 08:22:42,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 08:22:42,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/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 [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 08:22:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 08:22:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 08:22:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 08:22:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 08:22:42,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 08:22:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 08:22:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 08:22:42,999 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 08:22:42,999 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 08:22:43,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:22:43 BoogieIcfgContainer [2018-12-08 08:22:43,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 08:22:43,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 08:22:43,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 08:22:43,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 08:22:43,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:22:42" (1/3) ... [2018-12-08 08:22:43,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731aa27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:22:43, skipping insertion in model container [2018-12-08 08:22:43,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:22:42" (2/3) ... [2018-12-08 08:22:43,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731aa27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:22:43, skipping insertion in model container [2018-12-08 08:22:43,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:22:43" (3/3) ... [2018-12-08 08:22:43,006 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4_true-unreach-call.c.v+lh-reducer.c [2018-12-08 08:22:43,014 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 08:22:43,019 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 08:22:43,027 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 08:22:43,044 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 08:22:43,044 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 08:22:43,044 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 08:22:43,044 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 08:22:43,044 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 08:22:43,045 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 08:22:43,045 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 08:22:43,045 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 08:22:43,045 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 08:22:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-08 08:22:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 08:22:43,058 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:22:43,058 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:22:43,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:22:43,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:22:43,064 INFO L82 PathProgramCache]: Analyzing trace with hash -376112144, now seen corresponding path program 1 times [2018-12-08 08:22:43,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:22:43,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:22:43,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:22:43,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:22:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:43,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:22:43,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 08:22:43,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:22:43,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:22:43,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:22:43,288 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-12-08 08:22:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:22:43,323 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2018-12-08 08:22:43,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:22:43,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-08 08:22:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:22:43,329 INFO L225 Difference]: With dead ends: 38 [2018-12-08 08:22:43,330 INFO L226 Difference]: Without dead ends: 21 [2018-12-08 08:22:43,331 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:22:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-08 08:22:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-12-08 08:22:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 08:22:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-08 08:22:43,352 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2018-12-08 08:22:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:22:43,352 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-08 08:22:43,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:22:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-08 08:22:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 08:22:43,353 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:22:43,353 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:22:43,353 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:22:43,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:22:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash -425262959, now seen corresponding path program 1 times [2018-12-08 08:22:43,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:22:43,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:22:43,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:22:43,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:22:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:43,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:22:43,431 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:22:43,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:22:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:22:43,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:22:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:43,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:22:43,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 08:22:43,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 08:22:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 08:22:43,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:22:43,555 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-12-08 08:22:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:22:43,628 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-12-08 08:22:43,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 08:22:43,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-08 08:22:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:22:43,629 INFO L225 Difference]: With dead ends: 29 [2018-12-08 08:22:43,629 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 08:22:43,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-08 08:22:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 08:22:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-12-08 08:22:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-08 08:22:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-08 08:22:43,632 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2018-12-08 08:22:43,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:22:43,632 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-08 08:22:43,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 08:22:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-08 08:22:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 08:22:43,633 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:22:43,633 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:22:43,633 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:22:43,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:22:43,634 INFO L82 PathProgramCache]: Analyzing trace with hash 720615568, now seen corresponding path program 2 times [2018-12-08 08:22:43,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:22:43,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:22:43,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:22:43,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:22:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:43,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:22:43,710 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:22:43,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 08:22:43,770 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 08:22:43,770 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:22:43,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:22:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:43,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:22:43,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-08 08:22:43,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 08:22:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 08:22:43,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:22:43,813 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-12-08 08:22:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:22:43,903 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-12-08 08:22:43,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 08:22:43,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-12-08 08:22:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:22:43,904 INFO L225 Difference]: With dead ends: 34 [2018-12-08 08:22:43,904 INFO L226 Difference]: Without dead ends: 31 [2018-12-08 08:22:43,904 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-08 08:22:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-08 08:22:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-12-08 08:22:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-08 08:22:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-08 08:22:43,907 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2018-12-08 08:22:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:22:43,907 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-08 08:22:43,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 08:22:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-08 08:22:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 08:22:43,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:22:43,908 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:22:43,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:22:43,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:22:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1339742223, now seen corresponding path program 3 times [2018-12-08 08:22:43,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:22:43,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:22:43,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:22:43,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:22:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:22:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:22:44,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:22:44,010 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:22:44,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 08:22:44,179 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-08 08:22:44,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:22:44,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:22:44,237 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-08 08:22:44,238 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 08:22:44,249 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-08 08:22:44,264 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-12-08 08:22:44,265 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-08 08:22:44,269 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-08 08:22:44,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-08 08:22:44,274 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:24 [2018-12-08 08:22:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-08 08:22:44,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:22:44,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-12-08 08:22:44,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-08 08:22:44,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-08 08:22:44,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-08 08:22:44,360 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 13 states. [2018-12-08 08:22:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:22:44,836 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-08 08:22:44,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 08:22:44,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2018-12-08 08:22:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:22:44,837 INFO L225 Difference]: With dead ends: 39 [2018-12-08 08:22:44,837 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 08:22:44,837 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2018-12-08 08:22:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 08:22:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 08:22:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 08:22:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 08:22:44,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-08 08:22:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:22:44,838 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 08:22:44,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-08 08:22:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 08:22:44,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 08:22:44,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 08:22:44,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 08:22:44,967 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 08:22:44,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 08:22:44,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 08:22:44,967 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2018-12-08 08:22:44,967 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 08:22:44,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 131 235) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 131 235) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2018-12-08 08:22:44,968 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 131 235) the Hoare annotation is: (or (not (= 0 |old(~Id_MCDC_93~0)|)) (= ~Id_MCDC_93~0 0)) [2018-12-08 08:22:44,968 INFO L444 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse1 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse3 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (not (= 0 |old(~Id_MCDC_93~0)|)) (let ((.cse0 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse2 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse0 42) .cse1 (not (= (* 12 .cse2) 492)) (not (= 492 (* 12 .cse0))) .cse3 (< .cse2 42))) (and .cse1 (= ~Id_MCDC_93~0 0) .cse3 (= 0 main_~Id_MCDC_89__Id_MCDC_96~0)) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse1 (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse3 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)))) [2018-12-08 08:22:44,968 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2018-12-08 08:22:44,974 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,975 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,975 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,980 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,981 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,981 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:44,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:22:44 BoogieIcfgContainer [2018-12-08 08:22:44,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 08:22:44,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 08:22:44,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 08:22:44,983 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 08:22:44,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:22:43" (3/4) ... [2018-12-08 08:22:44,986 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 08:22:44,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 08:22:44,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 08:22:44,997 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2018-12-08 08:22:44,997 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2018-12-08 08:22:44,998 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-12-08 08:22:44,998 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-08 08:22:44,998 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-08 08:22:44,999 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 08:22:44,999 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 08:22:45,020 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(Id_MCDC_93)) || ((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) && !(492 == 12 * ((Id_MCDC_93 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) [2018-12-08 08:22:45,067 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_72488aac-3d69-4eb8-ba8f-d05f3bef187f/bin-2019/uautomizer/witness.graphml [2018-12-08 08:22:45,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 08:22:45,068 INFO L168 Benchmark]: Toolchain (without parser) took 2708.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 958.7 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 69.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,068 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:22:45,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 958.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.30 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. [2018-12-08 08:22:45,069 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,069 INFO L168 Benchmark]: RCFGBuilder took 354.41 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: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,069 INFO L168 Benchmark]: TraceAbstraction took 1982.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -73.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,069 INFO L168 Benchmark]: Witness Printer took 83.98 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: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-12-08 08:22:45,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 958.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.30 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. * Boogie Preprocessor took 28.49 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.41 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: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1982.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -73.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Witness Printer took 83.98 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: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 165]: Loop Invariant [2018-12-08 08:22:45,072 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:45,072 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:45,073 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:45,073 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:45,073 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-08 08:22:45,073 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((!(0 == \old(Id_MCDC_93)) || ((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) && !(492 == 12 * ((Id_MCDC_93 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 110 SDslu, 132 SDs, 0 SdLazy, 238 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 113 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 235 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 144 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 15713 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1301 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...