./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i --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/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/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 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/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 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:27:31,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:27:31,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:27:31,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:27:31,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:27:31,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:27:31,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:27:31,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:27:31,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:27:31,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:27:31,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:27:31,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:27:31,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:27:31,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:27:31,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:27:31,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:27:31,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:27:31,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:27:31,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:27:31,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:27:31,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:27:31,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:27:31,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:27:31,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:27:31,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:27:31,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:27:31,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:27:31,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:27:31,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:27:31,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:27:31,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:27:31,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:27:31,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:27:31,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:27:31,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:27:31,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:27:31,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:27:31,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:27:31,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:27:31,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:27:31,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:27:31,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:27:31,161 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:27:31,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:27:31,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:27:31,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:27:31,164 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:27:31,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:27:31,165 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:27:31,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:27:31,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:27:31,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:27:31,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:27:31,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:27:31,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:27:31,169 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:27:31,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:27:31,169 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:27:31,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:27:31,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:27:31,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:27:31,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:27:31,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:27:31,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:27:31,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:27:31,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:27:31,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:27:31,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:27:31,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:27:31,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:27:31,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/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 -> 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 [2019-11-16 00:27:31,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:27:31,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:27:31,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:27:31,247 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:27:31,247 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:27:31,248 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-16 00:27:31,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/48f673208/2bb10ac8d44e4fce9c82d5fbeb6b8c7e/FLAGc98017866 [2019-11-16 00:27:31,838 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:27:31,839 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-16 00:27:31,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/48f673208/2bb10ac8d44e4fce9c82d5fbeb6b8c7e/FLAGc98017866 [2019-11-16 00:27:32,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/48f673208/2bb10ac8d44e4fce9c82d5fbeb6b8c7e [2019-11-16 00:27:32,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:27:32,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:27:32,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:27:32,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:27:32,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:27:32,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1ed13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32, skipping insertion in model container [2019-11-16 00:27:32,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,101 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:27:32,146 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:27:32,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:27:32,552 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:27:32,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:27:32,708 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:27:32,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32 WrapperNode [2019-11-16 00:27:32,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:27:32,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:27:32,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:27:32,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:27:32,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:27:32,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:27:32,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:27:32,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:27:32,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... [2019-11-16 00:27:32,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:27:32,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:27:32,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:27:32,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:27:32,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:27:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:27:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:27:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:27:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-16 00:27:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-16 00:27:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:27:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:27:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:27:33,410 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:27:33,411 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-16 00:27:33,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:33 BoogieIcfgContainer [2019-11-16 00:27:33,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:27:33,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:27:33,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:27:33,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:27:33,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:32" (1/3) ... [2019-11-16 00:27:33,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a06c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:33, skipping insertion in model container [2019-11-16 00:27:33,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:32" (2/3) ... [2019-11-16 00:27:33,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a06c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:33, skipping insertion in model container [2019-11-16 00:27:33,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:33" (3/3) ... [2019-11-16 00:27:33,420 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-16 00:27:33,430 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:27:33,437 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:27:33,447 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:27:33,471 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:27:33,471 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:27:33,471 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:27:33,471 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:27:33,472 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:27:33,472 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:27:33,472 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:27:33,472 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:27:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-16 00:27:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:27:33,496 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:33,497 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:33,499 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-16 00:27:33,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:27:33,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394037885] [2019-11-16 00:27:33,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:33,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:33,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:27:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:33,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394037885] [2019-11-16 00:27:33,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:27:33,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:27:33,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299410901] [2019-11-16 00:27:33,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:27:33,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:27:33,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:27:33,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:27:33,723 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-16 00:27:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:33,762 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-11-16 00:27:33,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:27:33,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-16 00:27:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:33,774 INFO L225 Difference]: With dead ends: 43 [2019-11-16 00:27:33,774 INFO L226 Difference]: Without dead ends: 21 [2019-11-16 00:27:33,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:27:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-16 00:27:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-16 00:27:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-16 00:27:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-16 00:27:33,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-11-16 00:27:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:33,811 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-16 00:27:33,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:27:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-16 00:27:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:27:33,812 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:33,813 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:33,813 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-11-16 00:27:33,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:27:33,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988457550] [2019-11-16 00:27:33,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:33,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:33,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:27:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:33,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988457550] [2019-11-16 00:27:33,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078184807] [2019-11-16 00:27:33,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:33,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:27:34,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:34,044 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:27:34,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-16 00:27:34,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408177426] [2019-11-16 00:27:34,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:27:34,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:27:34,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:27:34,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:27:34,047 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-16 00:27:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:34,164 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-16 00:27:34,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:27:34,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-16 00:27:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:34,165 INFO L225 Difference]: With dead ends: 35 [2019-11-16 00:27:34,165 INFO L226 Difference]: Without dead ends: 24 [2019-11-16 00:27:34,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:27:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-16 00:27:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-16 00:27:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:27:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-16 00:27:34,171 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-11-16 00:27:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:34,171 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-16 00:27:34,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:27:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-16 00:27:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:27:34,172 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:34,173 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:34,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:34,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-11-16 00:27:34,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:27:34,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052166] [2019-11-16 00:27:34,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:34,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:34,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:27:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:34,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052166] [2019-11-16 00:27:34,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386565928] [2019-11-16 00:27:34,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:34,561 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:27:34,561 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:27:34,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:27:34,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:34,588 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:27:34,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-16 00:27:34,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595088457] [2019-11-16 00:27:34,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:27:34,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:27:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:27:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:27:34,591 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-16 00:27:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:34,650 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-16 00:27:34,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:27:34,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-16 00:27:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:34,653 INFO L225 Difference]: With dead ends: 38 [2019-11-16 00:27:34,653 INFO L226 Difference]: Without dead ends: 27 [2019-11-16 00:27:34,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:27:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-16 00:27:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-16 00:27:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-16 00:27:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-16 00:27:34,660 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-16 00:27:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:34,660 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-16 00:27:34,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:27:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-16 00:27:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-16 00:27:34,661 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:34,661 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:34,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:34,866 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-11-16 00:27:34,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:27:34,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247624154] [2019-11-16 00:27:34,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:34,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:34,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:27:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:34,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247624154] [2019-11-16 00:27:34,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249609674] [2019-11-16 00:27:34,958 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:35,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:27:35,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:27:35,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-16 00:27:35,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:35,198 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 13 treesize of output 9 [2019-11-16 00:27:35,198 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,215 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:35,216 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,216 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-16 00:27:35,267 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-16 00:27:35,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,279 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:35,279 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-11-16 00:27:35,348 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 15 treesize of output 7 [2019-11-16 00:27:35,349 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,353 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:35,353 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:35,353 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-16 00:27:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:27:35,373 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:27:35,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-11-16 00:27:35,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704289228] [2019-11-16 00:27:35,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:27:35,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:27:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:27:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:27:35,375 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2019-11-16 00:27:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:36,020 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-16 00:27:36,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:27:36,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-16 00:27:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:36,023 INFO L225 Difference]: With dead ends: 41 [2019-11-16 00:27:36,023 INFO L226 Difference]: Without dead ends: 30 [2019-11-16 00:27:36,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:27:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-16 00:27:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-16 00:27:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-16 00:27:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-16 00:27:36,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2019-11-16 00:27:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:36,030 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-16 00:27:36,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:27:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-16 00:27:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:27:36,037 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:36,038 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:36,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:36,239 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-16 00:27:36,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:27:36,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835551564] [2019-11-16 00:27:36,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:36,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:27:36,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:27:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:36,795 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2019-11-16 00:27:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:27:37,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835551564] [2019-11-16 00:27:37,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217277120] [2019-11-16 00:27:37,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:37,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-16 00:27:37,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:37,292 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 13 treesize of output 9 [2019-11-16 00:27:37,292 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,308 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,308 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,308 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-16 00:27:37,423 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_12|, |v_#memory_$Pointer$.offset_12|], 2=[|v_#memory_int_19|, |v_#memory_int_18|]} [2019-11-16 00:27:37,433 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:37,434 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-16 00:27:37,435 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,480 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,487 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:37,492 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-16 00:27:37,492 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,510 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,522 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-16 00:27:37,523 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,538 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,550 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:27:37,561 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,562 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2019-11-16 00:27:37,562 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,600 INFO L567 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2019-11-16 00:27:37,601 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,601 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:37 [2019-11-16 00:27:37,715 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,715 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2019-11-16 00:27:37,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:37,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:37,719 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:37,779 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.7 percent of original size [2019-11-16 00:27:37,797 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,798 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-16 00:27:37,798 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,856 INFO L567 ElimStorePlain]: treesize reduction 16, result has 81.0 percent of original size [2019-11-16 00:27:37,870 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:37,870 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-11-16 00:27:37,871 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:37,914 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2019-11-16 00:27:37,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:37,917 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:37,917 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:69, output treesize:53 [2019-11-16 00:27:37,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:37,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:38,102 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.base_14|, |v_#memory_$Pointer$.offset_14|, |v_#memory_int_21|]} [2019-11-16 00:27:38,108 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:38,148 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:38,152 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:38,184 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:38,204 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:38,205 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 31 treesize of output 33 [2019-11-16 00:27:38,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:38,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:38,217 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:27:38,217 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-11-16 00:27:38,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:27:38,421 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-16 00:27:38,426 INFO L168 Benchmark]: Toolchain (without parser) took 6343.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.8 MB in the beginning and 959.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:38,426 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:27:38,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:38,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:38,430 INFO L168 Benchmark]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:27:38,431 INFO L168 Benchmark]: RCFGBuilder took 582.55 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:38,431 INFO L168 Benchmark]: TraceAbstraction took 5011.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.5 MB in the end (delta: 133.1 MB). Peak memory consumption was 133.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:38,435 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 626.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 582.55 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5011.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.5 MB in the end (delta: 133.1 MB). Peak memory consumption was 133.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-16 00:27:41,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:27:41,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:27:41,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:27:41,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:27:41,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:27:41,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:27:41,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:27:41,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:27:41,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:27:41,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:27:41,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:27:41,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:27:41,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:27:41,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:27:41,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:27:41,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:27:41,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:27:41,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:27:41,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:27:41,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:27:41,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:27:41,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:27:41,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:27:41,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:27:41,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:27:41,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:27:41,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:27:41,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:27:41,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:27:41,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:27:41,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:27:41,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:27:41,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:27:41,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:27:41,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:27:41,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:27:41,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:27:41,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:27:41,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:27:41,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:27:41,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-16 00:27:41,127 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:27:41,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:27:41,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:27:41,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:27:41,130 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:27:41,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:27:41,130 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:27:41,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:27:41,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:27:41,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:27:41,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:27:41,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:27:41,132 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-16 00:27:41,132 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-16 00:27:41,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:27:41,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:27:41,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:27:41,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:27:41,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:27:41,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:27:41,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:27:41,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:27:41,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:27:41,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:27:41,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:27:41,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:27:41,136 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-16 00:27:41,136 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-16 00:27:41,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:27:41,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-16 00:27:41,137 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/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 -> 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 [2019-11-16 00:27:41,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:27:41,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:27:41,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:27:41,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:27:41,200 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:27:41,202 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-16 00:27:41,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/51ca6fb96/1acac04bb6a94fbabe8abbbfd0bdb59a/FLAG1831376b3 [2019-11-16 00:27:41,852 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:27:41,854 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-16 00:27:41,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/51ca6fb96/1acac04bb6a94fbabe8abbbfd0bdb59a/FLAG1831376b3 [2019-11-16 00:27:42,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/data/51ca6fb96/1acac04bb6a94fbabe8abbbfd0bdb59a [2019-11-16 00:27:42,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:27:42,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:27:42,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:27:42,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:27:42,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:27:42,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788d6746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42, skipping insertion in model container [2019-11-16 00:27:42,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,102 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:27:42,145 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:27:42,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:27:42,611 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:27:42,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:27:42,768 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:27:42,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42 WrapperNode [2019-11-16 00:27:42,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:27:42,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:27:42,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:27:42,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:27:42,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:27:42,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:27:42,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:27:42,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:27:42,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... [2019-11-16 00:27:42,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:27:42,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:27:42,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:27:42,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:27:42,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:27:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-16 00:27:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-16 00:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-16 00:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:27:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-16 00:27:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:27:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:27:43,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:27:43,551 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-16 00:27:43,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:43 BoogieIcfgContainer [2019-11-16 00:27:43,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:27:43,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:27:43,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:27:43,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:27:43,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:42" (1/3) ... [2019-11-16 00:27:43,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e64071e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:43, skipping insertion in model container [2019-11-16 00:27:43,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:42" (2/3) ... [2019-11-16 00:27:43,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e64071e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:43, skipping insertion in model container [2019-11-16 00:27:43,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:43" (3/3) ... [2019-11-16 00:27:43,561 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-16 00:27:43,575 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:27:43,584 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:27:43,596 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:27:43,623 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:27:43,624 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:27:43,624 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:27:43,624 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:27:43,625 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:27:43,625 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:27:43,625 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:27:43,625 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:27:43,641 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-16 00:27:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:27:43,649 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:43,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:43,652 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-16 00:27:43,667 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:27:43,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [913654626] [2019-11-16 00:27:43,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:43,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:27:43,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:43,874 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:27:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:43,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [913654626] [2019-11-16 00:27:43,900 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:27:43,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-16 00:27:43,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119361385] [2019-11-16 00:27:43,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:27:43,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:27:43,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:27:43,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:27:43,918 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-16 00:27:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:44,003 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-16 00:27:44,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:27:44,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-16 00:27:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:44,014 INFO L225 Difference]: With dead ends: 44 [2019-11-16 00:27:44,014 INFO L226 Difference]: Without dead ends: 22 [2019-11-16 00:27:44,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:27:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-16 00:27:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-16 00:27:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:27:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-16 00:27:44,051 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-11-16 00:27:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:44,051 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-16 00:27:44,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:27:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-16 00:27:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:27:44,053 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:44,053 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:44,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:44,255 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-11-16 00:27:44,256 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:27:44,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [406345958] [2019-11-16 00:27:44,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:44,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:27:44,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:44,463 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:27:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:27:44,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [406345958] [2019-11-16 00:27:44,522 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:27:44,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-16 00:27:44,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072973049] [2019-11-16 00:27:44,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:27:44,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:27:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:27:44,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:27:44,525 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-16 00:27:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:44,664 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-16 00:27:44,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:27:44,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-16 00:27:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:44,667 INFO L225 Difference]: With dead ends: 39 [2019-11-16 00:27:44,667 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:27:44,667 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:27:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:27:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-16 00:27:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-16 00:27:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-16 00:27:44,673 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-16 00:27:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:44,673 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-16 00:27:44,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:27:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-16 00:27:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:27:44,674 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:44,675 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:44,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:44,877 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-11-16 00:27:44,878 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:27:44,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2069796862] [2019-11-16 00:27:44,879 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:45,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:27:45,095 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:27:45,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:27:45,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:45,192 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 13 treesize of output 9 [2019-11-16 00:27:45,192 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,225 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:45,225 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,226 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-16 00:27:45,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:45,283 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-16 00:27:45,284 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,301 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:45,302 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,302 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-16 00:27:45,391 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 15 treesize of output 7 [2019-11-16 00:27:45,392 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,405 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:45,405 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,405 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-16 00:27:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-16 00:27:45,461 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:27:45,583 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:45,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:45,591 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:45,591 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:17 [2019-11-16 00:27:45,657 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:45,696 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:45,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:27:45,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:45,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:45,703 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2019-11-16 00:27:45,703 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:52 [2019-11-16 00:27:45,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:45,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-16 00:27:45,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2069796862] [2019-11-16 00:27:45,987 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:27:45,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-11-16 00:27:45,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846580640] [2019-11-16 00:27:45,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-16 00:27:45,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:27:45,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-16 00:27:45,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:27:45,989 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 15 states. [2019-11-16 00:27:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:27:46,717 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-16 00:27:46,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:27:46,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-11-16 00:27:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:27:46,719 INFO L225 Difference]: With dead ends: 32 [2019-11-16 00:27:46,719 INFO L226 Difference]: Without dead ends: 30 [2019-11-16 00:27:46,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:27:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-16 00:27:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-16 00:27:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-16 00:27:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-16 00:27:46,735 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2019-11-16 00:27:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:27:46,735 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-16 00:27:46,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-16 00:27:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-16 00:27:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:27:46,739 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:27:46,739 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:27:46,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:46,942 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:27:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:27:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-16 00:27:46,943 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:27:46,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1579176779] [2019-11-16 00:27:46,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b934cc6-206f-4550-8cc5-5a5493949de8/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:27:47,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-16 00:27:47,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:27:47,212 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-16 00:27:47,212 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,223 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,223 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,223 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-16 00:27:47,262 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,263 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-16 00:27:47,264 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,303 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-16 00:27:47,304 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:47,304 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-11-16 00:27:47,384 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,385 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 54 [2019-11-16 00:27:47,386 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,440 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.9 percent of original size [2019-11-16 00:27:47,441 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:47,442 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:29 [2019-11-16 00:27:47,529 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,530 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 73 [2019-11-16 00:27:47,531 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,598 INFO L567 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2019-11-16 00:27:47,599 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:47,599 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:40 [2019-11-16 00:27:47,652 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-16 00:27:47,652 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,691 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:47,692 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55 [2019-11-16 00:27:47,769 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,769 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 43 [2019-11-16 00:27:47,770 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,808 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,809 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,809 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:37 [2019-11-16 00:27:47,872 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_24|, |v_#memory_$Pointer$.base_24|], 2=[|v_#memory_int_30|, |v_#memory_int_31|]} [2019-11-16 00:27:47,887 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:47,889 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-16 00:27:47,889 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:47,968 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:47,984 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:47,985 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-16 00:27:47,986 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,044 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,048 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:48,105 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,120 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,122 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-11-16 00:27:48,122 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,158 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,158 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,159 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:101, output treesize:57 [2019-11-16 00:27:48,243 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.base_25|], 4=[|v_#memory_int_32|]} [2019-11-16 00:27:48,255 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-16 00:27:48,255 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,301 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,315 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2019-11-16 00:27:48,315 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,390 INFO L567 ElimStorePlain]: treesize reduction 4, result has 95.2 percent of original size [2019-11-16 00:27:48,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,402 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2019-11-16 00:27:48,403 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,440 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,440 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:48,441 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:91, output treesize:64 [2019-11-16 00:27:48,605 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_int_33|, |v_#memory_$Pointer$.offset_26|, |v_#memory_$Pointer$.base_26|]} [2019-11-16 00:27:48,617 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:48,708 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,714 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:27:48,760 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,776 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:27:48,778 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2019-11-16 00:27:48,778 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,869 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2019-11-16 00:27:48,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,876 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:27:48,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,888 INFO L375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-16 00:27:48,889 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,890 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,890 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:27:48,920 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,930 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:27:48,930 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 47 treesize of output 45 [2019-11-16 00:27:48,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:27:48,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:27:48,941 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:27:48,942 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_24], 1=[v_arrayElimCell_25]} [2019-11-16 00:27:49,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:27:49,145 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-16 00:27:49,148 INFO L168 Benchmark]: Toolchain (without parser) took 7065.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:49,148 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:27:49,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:49,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:49,150 INFO L168 Benchmark]: Boogie Preprocessor took 41.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:27:49,150 INFO L168 Benchmark]: RCFGBuilder took 674.24 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:49,151 INFO L168 Benchmark]: TraceAbstraction took 5593.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -38.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:27:49,156 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 685.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 674.24 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5593.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -38.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...