./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/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 043660dc5a969bbd34b12cbb93ba3e467b4f8613 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:23,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:23,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:23,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:23,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:23,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:23,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:23,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:23,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:23,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:23,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:23,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:23,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:23,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:23,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:23,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:23,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:23,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:23,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:23,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:23,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:23,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:23,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:23,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:23,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:23,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:23,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:23,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:23,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:23,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:23,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:23,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:23,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:23,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:23,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:23,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:23,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:23,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:23,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:23,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:23,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:23,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:59:23,142 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:23,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:23,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:23,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:23,143 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:23,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:59:23,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:23,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:59:23,145 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:59:23,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:23,145 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:23,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:59:23,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:23,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:23,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:23,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:23,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:23,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:23,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:23,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:59:23,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:23,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:23,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:59:23,149 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/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/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 ! 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 -> 043660dc5a969bbd34b12cbb93ba3e467b4f8613 [2019-10-22 08:59:23,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:23,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:23,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:23,211 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:23,212 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:23,212 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test24-1.c [2019-10-22 08:59:23,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/data/11894375f/4265f20ddff445f680eeb5342ee82d77/FLAG149fde09d [2019-10-22 08:59:23,671 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:23,672 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/sv-benchmarks/c/ldv-regression/test24-1.c [2019-10-22 08:59:23,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/data/11894375f/4265f20ddff445f680eeb5342ee82d77/FLAG149fde09d [2019-10-22 08:59:23,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/data/11894375f/4265f20ddff445f680eeb5342ee82d77 [2019-10-22 08:59:23,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:23,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:23,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:23,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:23,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:23,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:23" (1/1) ... [2019-10-22 08:59:23,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc43f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:23, skipping insertion in model container [2019-10-22 08:59:23,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:23" (1/1) ... [2019-10-22 08:59:23,722 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:23,744 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:23,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:24,013 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:24,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:24,055 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24 WrapperNode [2019-10-22 08:59:24,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:24,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:24,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:24,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:24,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:24,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:24,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:24,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:24,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... [2019-10-22 08:59:24,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:24,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:24,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:24,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:24,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/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 [2019-10-22 08:59:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:59:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:59:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:59:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:59:24,604 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:24,604 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:59:24,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24 BoogieIcfgContainer [2019-10-22 08:59:24,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:24,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:24,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:24,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:24,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:23" (1/3) ... [2019-10-22 08:59:24,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b05e6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:24, skipping insertion in model container [2019-10-22 08:59:24,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:24" (2/3) ... [2019-10-22 08:59:24,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b05e6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:24, skipping insertion in model container [2019-10-22 08:59:24,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24" (3/3) ... [2019-10-22 08:59:24,620 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-10-22 08:59:24,634 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:24,646 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:59:24,660 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:59:24,689 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:24,690 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:59:24,690 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:24,690 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:24,690 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:24,691 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:24,691 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:24,691 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 08:59:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:59:24,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:24,714 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:24,716 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2019-10-22 08:59:24,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:24,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075177288] [2019-10-22 08:59:24,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:24,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:24,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:24,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075177288] [2019-10-22 08:59:24,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:24,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:59:24,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888542697] [2019-10-22 08:59:24,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:59:24,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:59:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:59:24,902 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 08:59:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:24,918 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-10-22 08:59:24,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:59:24,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-10-22 08:59:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:24,930 INFO L225 Difference]: With dead ends: 23 [2019-10-22 08:59:24,930 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 08:59:24,934 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:59:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 08:59:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 08:59:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:59:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-10-22 08:59:24,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-10-22 08:59:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:24,972 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-10-22 08:59:24,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:59:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-10-22 08:59:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:59:24,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:24,973 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:24,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2019-10-22 08:59:24,975 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:24,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330790723] [2019-10-22 08:59:24,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:24,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:24,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:25,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330790723] [2019-10-22 08:59:25,097 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:25,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:25,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508570424] [2019-10-22 08:59:25,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:59:25,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:59:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:59:25,100 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2019-10-22 08:59:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:25,160 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 08:59:25,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:59:25,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 08:59:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:25,162 INFO L225 Difference]: With dead ends: 17 [2019-10-22 08:59:25,162 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 08:59:25,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:59:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 08:59:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 08:59:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:59:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-22 08:59:25,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-10-22 08:59:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:25,167 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-22 08:59:25,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:59:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-22 08:59:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:59:25,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:25,168 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:25,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2019-10-22 08:59:25,169 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:25,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100509204] [2019-10-22 08:59:25,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:25,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:25,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100509204] [2019-10-22 08:59:25,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325981425] [2019-10-22 08:59:25,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/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 [2019-10-22 08:59:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:25,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 08:59:25,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:27,579 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-22 08:59:27,586 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:59:27,586 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2019-10-22 08:59:27,588 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:59:27,595 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:59:27,597 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:59:27,597 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:5 [2019-10-22 08:59:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:27,610 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:27,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-10-22 08:59:27,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480963243] [2019-10-22 08:59:27,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:59:27,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:59:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:59:27,612 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2019-10-22 08:59:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:30,150 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-10-22 08:59:30,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:59:30,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-10-22 08:59:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:30,151 INFO L225 Difference]: With dead ends: 21 [2019-10-22 08:59:30,152 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 08:59:30,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:59:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 08:59:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 08:59:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 08:59:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-22 08:59:30,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2019-10-22 08:59:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:30,155 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-22 08:59:30,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:59:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-22 08:59:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:59:30,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,156 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:30,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:30,358 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,358 INFO L82 PathProgramCache]: Analyzing trace with hash -919715042, now seen corresponding path program 2 times [2019-10-22 08:59:30,359 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,359 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55003974] [2019-10-22 08:59:30,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:30,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55003974] [2019-10-22 08:59:30,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120533629] [2019-10-22 08:59:30,441 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/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 [2019-10-22 08:59:30,480 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:59:30,480 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:59:30,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 08:59:30,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:30,525 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-10-22 08:59:30,526 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:59:30,528 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:59:30,528 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:59:30,528 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-10-22 08:59:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:30,531 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:30,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-10-22 08:59:30,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428203086] [2019-10-22 08:59:30,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:59:30,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:30,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:59:30,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:59:30,532 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-10-22 08:59:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:30,610 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-10-22 08:59:30,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:59:30,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-10-22 08:59:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:30,612 INFO L225 Difference]: With dead ends: 23 [2019-10-22 08:59:30,612 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:59:30,612 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:59:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:59:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-22 08:59:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:59:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-22 08:59:30,616 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-10-22 08:59:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:30,616 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-22 08:59:30,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:59:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-22 08:59:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:59:30,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,617 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:30,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:30,817 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1868061597, now seen corresponding path program 3 times [2019-10-22 08:59:30,818 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533314428] [2019-10-22 08:59:30,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:30,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533314428] [2019-10-22 08:59:30,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011568410] [2019-10-22 08:59:30,901 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/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 [2019-10-22 08:59:30,941 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 08:59:30,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:59:30,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 08:59:30,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:30,957 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-10-22 08:59:30,958 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:59:30,970 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:59:30,971 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:59:30,971 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-10-22 08:59:31,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-22 08:59:31,191 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:31,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-10-22 08:59:31,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328973496] [2019-10-22 08:59:31,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:59:31,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:59:31,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:59:31,193 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 16 states. [2019-10-22 08:59:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:32,101 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-10-22 08:59:32,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:59:32,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2019-10-22 08:59:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:32,102 INFO L225 Difference]: With dead ends: 23 [2019-10-22 08:59:32,102 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:59:32,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2019-10-22 08:59:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:59:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:59:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:59:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:59:32,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-22 08:59:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:32,103 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:32,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:59:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:32,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:59:32,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:32,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:59:32,382 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,382 INFO L443 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-10-22 08:59:32,382 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 32) no Hoare annotation was computed. [2019-10-22 08:59:32,382 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L439 ceAbstractionStarter]: At program point L11(lines 9 12) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (- |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) 8))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))))) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (= 1 |ULTIMATE.start_check_#res|) (exists ((ULTIMATE.start_main_~pa~0.offset Int)) (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse1 (select .cse3 ULTIMATE.start_main_~pa~0.offset))) (and (<= .cse1 ULTIMATE.start_main_~i~0) (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse2 (div (+ (- |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) 8))) (= .cse2 (select .cse3 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse2 8))))) (<= ULTIMATE.start_main_~i~0 .cse1)))))) [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L439 ceAbstractionStarter]: At program point L30(lines 15 38) the Hoare annotation is: false [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (- |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) 8))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))))) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)) [2019-10-22 08:59:32,383 INFO L443 ceAbstractionStarter]: For program point L26-4(lines 26 28) no Hoare annotation was computed. [2019-10-22 08:59:32,383 INFO L446 ceAbstractionStarter]: At program point L37(lines 14 38) the Hoare annotation is: true [2019-10-22 08:59:32,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,394 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,395 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,395 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,395 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,395 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,400 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,401 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,404 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,404 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:32 BoogieIcfgContainer [2019-10-22 08:59:32,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:32,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:32,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:32,408 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:32,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:24" (3/4) ... [2019-10-22 08:59:32,412 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:59:32,421 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 08:59:32,421 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:59:32,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:59:32,448 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ad1 * 7 + pa) % 8 == 0 && (-ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + pa) / 8 * 8]) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && 1 == \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8]) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) [2019-10-22 08:59:32,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7a81385f-dcbd-497e-948a-4e51d4693d5a/bin/uautomizer/witness.graphml [2019-10-22 08:59:32,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:32,465 INFO L168 Benchmark]: Toolchain (without parser) took 8763.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.7 MB in the beginning and 889.9 MB in the end (delta: 54.8 MB). Peak memory consumption was 231.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,465 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:32,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -226.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:32,466 INFO L168 Benchmark]: Boogie Preprocessor took 41.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,466 INFO L168 Benchmark]: RCFGBuilder took 462.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,467 INFO L168 Benchmark]: TraceAbstraction took 7800.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 889.9 MB in the end (delta: 254.8 MB). Peak memory consumption was 254.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,467 INFO L168 Benchmark]: Witness Printer took 55.77 ms. Allocated memory is still 1.2 GB. Free memory is still 889.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:32,469 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -226.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 462.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7800.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 889.9 MB in the end (delta: 254.8 MB). Peak memory consumption was 254.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.77 ms. Allocated memory is still 1.2 GB. Free memory is still 889.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] * 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 - 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 - 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: 36]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant [2019-10-22 08:59:32,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,478 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,478 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,479 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,479 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,479 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-10-22 08:59:32,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,482 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,482 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,482 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((ad1 * 7 + pa) % 8 == 0 && (-ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + pa) / 8 * 8]) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && 1 == \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8]) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) - InvariantResult [Line: 26]: Loop Invariant [2019-10-22 08:59:32,483 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,483 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,484 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:59:32,484 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 * 7 + pa) % 8 == 0 && (-ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + pa) / 8 * 8]) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 7.6s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 26 SDslu, 54 SDs, 0 SdLazy, 122 SolverSat, 7 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 133 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 255 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 103 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 95 ConstructedInterpolants, 7 QuantifiedInterpolants, 12627 SizeOfPredicates, 29 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/68 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 correct! Received shutdown request...