./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 0.1.24-678e011 [2019-11-20 09:44:29,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:44:29,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:44:29,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:44:29,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:44:29,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:44:29,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:44:29,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:44:29,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:44:29,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:44:29,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:44:29,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:44:29,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:44:29,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:44:29,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:44:29,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:44:29,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:44:29,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:44:29,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:44:29,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:44:29,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:44:29,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:44:29,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:44:29,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:44:29,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:44:29,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:44:29,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:44:29,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:44:29,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:44:29,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:44:29,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:44:29,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:44:29,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:44:29,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:44:29,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:44:29,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:44:29,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:44:29,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:44:29,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:44:29,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:44:29,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:44:29,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:44:29,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:44:29,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:44:29,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:44:29,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:44:29,539 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:44:29,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:44:29,539 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:44:29,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:44:29,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:44:29,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:44:29,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:44:29,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:44:29,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:44:29,540 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:44:29,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:44:29,541 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:44:29,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:44:29,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:44:29,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:44:29,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:44:29,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:44:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:44:29,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:44:29,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:44:29,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:44:29,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:44:29,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:44:29,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:44:29,544 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_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:29,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:44:29,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:44:29,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:44:29,750 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:44:29,750 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:44:29,752 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-20 09:44:29,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/85fe75593/85a1c05b60494c18915a2198b94ba965/FLAG740545fd3 [2019-11-20 09:44:30,373 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:44:30,373 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-20 09:44:30,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/85fe75593/85a1c05b60494c18915a2198b94ba965/FLAG740545fd3 [2019-11-20 09:44:30,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/85fe75593/85a1c05b60494c18915a2198b94ba965 [2019-11-20 09:44:30,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:44:30,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:44:30,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:44:30,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:44:30,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:44:30,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:44:30" (1/1) ... [2019-11-20 09:44:30,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680186e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:30, skipping insertion in model container [2019-11-20 09:44:30,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:44:30" (1/1) ... [2019-11-20 09:44:30,741 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:44:30,790 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:44:31,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:44:31,180 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:44:31,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:44:31,300 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:44:31,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31 WrapperNode [2019-11-20 09:44:31,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:44:31,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:44:31,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:44:31,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:44:31,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:44:31,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:44:31,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:44:31,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:44:31,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... [2019-11-20 09:44:31,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:44:31,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:44:31,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:44:31,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:44:31,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:44:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:44:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:44:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 09:44:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 09:44:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:44:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:44:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:44:31,858 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:44:31,859 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-20 09:44:31,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:44:31 BoogieIcfgContainer [2019-11-20 09:44:31,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:44:31,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:44:31,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:44:31,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:44:31,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:44:30" (1/3) ... [2019-11-20 09:44:31,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c20a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:44:31, skipping insertion in model container [2019-11-20 09:44:31,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:31" (2/3) ... [2019-11-20 09:44:31,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c20a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:44:31, skipping insertion in model container [2019-11-20 09:44:31,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:44:31" (3/3) ... [2019-11-20 09:44:31,868 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-20 09:44:31,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:44:31,888 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:44:31,900 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:44:31,923 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:44:31,923 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:44:31,924 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:44:31,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:44:31,924 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:44:31,924 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:44:31,924 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:44:31,924 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:44:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-20 09:44:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 09:44:31,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:31,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:31,945 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-20 09:44:31,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:44:31,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816291118] [2019-11-20 09:44:31,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:44:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:32,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816291118] [2019-11-20 09:44:32,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:44:32,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:44:32,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315638281] [2019-11-20 09:44:32,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:44:32,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:44:32,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:44:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:44:32,180 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-20 09:44:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:32,222 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-11-20 09:44:32,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:44:32,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-20 09:44:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:32,235 INFO L225 Difference]: With dead ends: 43 [2019-11-20 09:44:32,235 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 09:44:32,239 INFO L630 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 [2019-11-20 09:44:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 09:44:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-20 09:44:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 09:44:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-20 09:44:32,274 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-11-20 09:44:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:32,274 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-20 09:44:32,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:44:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-20 09:44:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 09:44:32,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:32,276 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:32,276 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-11-20 09:44:32,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:44:32,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120862772] [2019-11-20 09:44:32,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:44:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:32,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120862772] [2019-11-20 09:44:32,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045606113] [2019-11-20 09:44:32,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:32,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:44:32,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:32,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:44:32,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-20 09:44:32,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655693212] [2019-11-20 09:44:32,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:44:32,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:44:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:44:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:44:32,527 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-20 09:44:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:32,567 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-20 09:44:32,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:44:32,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-20 09:44:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:32,568 INFO L225 Difference]: With dead ends: 35 [2019-11-20 09:44:32,569 INFO L226 Difference]: Without dead ends: 24 [2019-11-20 09:44:32,570 INFO L630 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 [2019-11-20 09:44:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-20 09:44:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-20 09:44:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 09:44:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-20 09:44:32,575 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-11-20 09:44:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:32,575 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-20 09:44:32,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:44:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-20 09:44:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 09:44:32,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:32,576 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:32,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:44:32,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-11-20 09:44:32,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:44:32,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129397964] [2019-11-20 09:44:32,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:44:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:32,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129397964] [2019-11-20 09:44:32,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047667085] [2019-11-20 09:44:32,905 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:32,999 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:44:33,000 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:44:33,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:44:33,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:33,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:44:33,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-20 09:44:33,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044837986] [2019-11-20 09:44:33,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 09:44:33,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:44:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 09:44:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 09:44:33,034 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-20 09:44:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:33,071 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-20 09:44:33,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:44:33,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 09:44:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:33,073 INFO L225 Difference]: With dead ends: 38 [2019-11-20 09:44:33,073 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 09:44:33,074 INFO L630 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 [2019-11-20 09:44:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 09:44:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-20 09:44:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 09:44:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-20 09:44:33,079 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-20 09:44:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:33,080 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-20 09:44:33,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 09:44:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-20 09:44:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 09:44:33,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:33,082 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:33,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:44:33,286 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:33,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-11-20 09:44:33,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:44:33,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144490888] [2019-11-20 09:44:33,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:44:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:33,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144490888] [2019-11-20 09:44:33,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493579025] [2019-11-20 09:44:33,383 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:33,483 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 09:44:33,483 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:44:33,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 09:44:33,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:33,599 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 09:44:33,600 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,612 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:33,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,613 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-20 09:44:33,656 INFO L377 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 [2019-11-20 09:44:33,656 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,664 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:33,664 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,665 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-11-20 09:44:33,731 INFO L377 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 [2019-11-20 09:44:33,732 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,739 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:33,739 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:33,740 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-20 09:44:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:44:33,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:44:33,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-11-20 09:44:33,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23308161] [2019-11-20 09:44:33,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 09:44:33,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:44:33,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 09:44:33,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-20 09:44:33,766 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2019-11-20 09:44:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:34,368 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-20 09:44:34,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 09:44:34,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-20 09:44:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:34,370 INFO L225 Difference]: With dead ends: 41 [2019-11-20 09:44:34,370 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 09:44:34,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-11-20 09:44:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 09:44:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 09:44:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 09:44:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-20 09:44:34,381 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2019-11-20 09:44:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:34,382 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-20 09:44:34,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 09:44:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-20 09:44:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:44:34,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:34,384 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:34,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:44:34,585 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-20 09:44:34,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:44:34,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635265538] [2019-11-20 09:44:34,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:44:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:44:35,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635265538] [2019-11-20 09:44:35,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933966850] [2019-11-20 09:44:35,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:35,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-20 09:44:35,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:35,770 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 09:44:35,771 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:35,780 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:35,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:35,781 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-20 09:44:35,884 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|]} [2019-11-20 09:44:35,906 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:35,908 INFO L377 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 [2019-11-20 09:44:35,908 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:35,950 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:35,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:35,960 INFO L377 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 [2019-11-20 09:44:35,961 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:35,994 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,008 INFO L377 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 [2019-11-20 09:44:36,009 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:36,034 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,058 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:44:36,077 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,077 INFO L377 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 [2019-11-20 09:44:36,078 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:36,112 INFO L567 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2019-11-20 09:44:36,113 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:36,113 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:37 [2019-11-20 09:44:36,187 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,188 INFO L377 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 [2019-11-20 09:44:36,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,193 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:36,273 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.7 percent of original size [2019-11-20 09:44:36,306 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,307 INFO L377 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 [2019-11-20 09:44:36,308 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:36,382 INFO L567 ElimStorePlain]: treesize reduction 16, result has 81.0 percent of original size [2019-11-20 09:44:36,401 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,401 INFO L377 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 [2019-11-20 09:44:36,402 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:36,462 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2019-11-20 09:44:36,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,464 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. [2019-11-20 09:44:36,464 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:69, output treesize:53 [2019-11-20 09:44:36,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,680 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|]} [2019-11-20 09:44:36,687 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:36,737 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,742 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:36,768 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,784 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:36,784 INFO L377 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 [2019-11-20 09:44:36,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:36,793 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:36,794 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:44:36,795 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-11-20 09:44:36,999 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:44:37,000 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.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-20 09:44:37,003 INFO L168 Benchmark]: Toolchain (without parser) took 6280.75 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 231.2 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 68.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:37,003 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:44:37,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:37,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.83 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. [2019-11-20 09:44:37,004 INFO L168 Benchmark]: Boogie Preprocessor took 35.59 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. [2019-11-20 09:44:37,005 INFO L168 Benchmark]: RCFGBuilder took 446.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:37,005 INFO L168 Benchmark]: TraceAbstraction took 5140.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.2 MB). Peak memory consumption was 72.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:37,009 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 578.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.59 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 446.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5140.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.2 MB). Peak memory consumption was 72.3 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 0.1.24-678e011 [2019-11-20 09:44:39,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:44:39,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:44:39,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:44:39,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:44:39,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:44:39,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:44:39,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:44:39,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:44:39,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:44:39,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:44:39,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:44:39,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:44:39,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:44:39,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:44:39,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:44:39,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:44:39,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:44:39,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:44:39,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:44:39,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:44:39,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:44:39,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:44:39,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:44:39,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:44:39,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:44:39,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:44:39,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:44:39,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:44:39,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:44:39,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:44:39,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:44:39,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:44:39,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:44:39,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:44:39,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:44:39,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:44:39,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:44:39,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:44:39,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:44:39,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:44:39,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 09:44:39,332 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:44:39,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:44:39,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:44:39,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:44:39,334 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:44:39,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:44:39,334 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:44:39,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:44:39,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:44:39,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:44:39,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:44:39,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:44:39,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 09:44:39,336 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 09:44:39,336 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:44:39,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:44:39,337 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:44:39,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:44:39,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:44:39,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:44:39,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:44:39,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:44:39,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:44:39,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:44:39,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:44:39,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:44:39,339 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 09:44:39,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 09:44:39,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:44:39,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 09:44:39,340 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_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:39,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:44:39,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:44:39,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:44:39,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:44:39,669 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:44:39,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-20 09:44:39,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/98bce83a3/a16dbdf1bb7e48088bc3985454df02d0/FLAG8d5bda9b5 [2019-11-20 09:44:40,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:44:40,299 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-20 09:44:40,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/98bce83a3/a16dbdf1bb7e48088bc3985454df02d0/FLAG8d5bda9b5 [2019-11-20 09:44:40,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/bin/uautomizer/data/98bce83a3/a16dbdf1bb7e48088bc3985454df02d0 [2019-11-20 09:44:40,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:44:40,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:44:40,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:44:40,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:44:40,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:44:40,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:44:40" (1/1) ... [2019-11-20 09:44:40,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a61c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:40, skipping insertion in model container [2019-11-20 09:44:40,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:44:40" (1/1) ... [2019-11-20 09:44:40,589 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:44:40,641 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:44:40,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:44:41,066 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:44:41,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:44:41,197 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:44:41,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41 WrapperNode [2019-11-20 09:44:41,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:44:41,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:44:41,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:44:41,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:44:41,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:44:41,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:44:41,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:44:41,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:44:41,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... [2019-11-20 09:44:41,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:44:41,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:44:41,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:44:41,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:44:41,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 09:44:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:44:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 09:44:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 09:44:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:44:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 09:44:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:44:41,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:44:41,813 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:44:41,813 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-20 09:44:41,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:44:41 BoogieIcfgContainer [2019-11-20 09:44:41,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:44:41,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:44:41,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:44:41,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:44:41,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:44:40" (1/3) ... [2019-11-20 09:44:41,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50070d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:44:41, skipping insertion in model container [2019-11-20 09:44:41,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:44:41" (2/3) ... [2019-11-20 09:44:41,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50070d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:44:41, skipping insertion in model container [2019-11-20 09:44:41,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:44:41" (3/3) ... [2019-11-20 09:44:41,823 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-20 09:44:41,834 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:44:41,842 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:44:41,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:44:41,875 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:44:41,875 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:44:41,875 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:44:41,876 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:44:41,876 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:44:41,876 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:44:41,876 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:44:41,876 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:44:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-20 09:44:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 09:44:41,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:41,898 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:41,899 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:41,904 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-20 09:44:41,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:44:41,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1493143571] [2019-11-20 09:44:41,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:42,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 09:44:42,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:42,128 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:44:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:42,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1493143571] [2019-11-20 09:44:42,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:44:42,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 09:44:42,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676563033] [2019-11-20 09:44:42,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:44:42,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:44:42,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:44:42,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:44:42,177 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-20 09:44:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:42,269 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-20 09:44:42,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:44:42,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 09:44:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:42,295 INFO L225 Difference]: With dead ends: 44 [2019-11-20 09:44:42,295 INFO L226 Difference]: Without dead ends: 22 [2019-11-20 09:44:42,299 INFO L630 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 [2019-11-20 09:44:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-20 09:44:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-20 09:44:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 09:44:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-20 09:44:42,337 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-11-20 09:44:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:42,337 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-20 09:44:42,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:44:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-20 09:44:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 09:44:42,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:42,338 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:42,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:44:42,539 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-11-20 09:44:42,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:44:42,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [255306941] [2019-11-20 09:44:42,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:42,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:44:42,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:42,756 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:44:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:44:42,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255306941] [2019-11-20 09:44:42,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:44:42,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-20 09:44:42,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732433793] [2019-11-20 09:44:42,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 09:44:42,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:44:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 09:44:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-20 09:44:42,870 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-20 09:44:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:43,062 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-20 09:44:43,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 09:44:43,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-20 09:44:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:43,064 INFO L225 Difference]: With dead ends: 39 [2019-11-20 09:44:43,064 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 09:44:43,065 INFO L630 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 [2019-11-20 09:44:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 09:44:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 09:44:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 09:44:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-20 09:44:43,078 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-20 09:44:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:43,080 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-20 09:44:43,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 09:44:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-20 09:44:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 09:44:43,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:43,084 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:43,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:44:43,288 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-11-20 09:44:43,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:44:43,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1593139401] [2019-11-20 09:44:43,292 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:43,534 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:44:43,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:44:43,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 09:44:43,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:43,677 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 09:44:43,678 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:43,695 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,696 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-20 09:44:43,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:43,750 INFO L377 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 [2019-11-20 09:44:43,751 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,766 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:43,766 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,766 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-20 09:44:43,859 INFO L377 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 [2019-11-20 09:44:43,859 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,867 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:43,868 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:43,868 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-20 09:44:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:44:43,892 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:44:44,015 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:44,021 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:44,022 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:44,022 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:17 [2019-11-20 09:44:44,126 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:44,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:44,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:44:44,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:44,194 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-20 09:44:44,195 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2019-11-20 09:44:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:44:44,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1593139401] [2019-11-20 09:44:44,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:44:44,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-20 09:44:44,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11657838] [2019-11-20 09:44:44,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 09:44:44,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:44:44,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 09:44:44,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-20 09:44:44,354 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 14 states. [2019-11-20 09:44:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:44:45,080 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-20 09:44:45,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 09:44:45,081 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2019-11-20 09:44:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:44:45,082 INFO L225 Difference]: With dead ends: 32 [2019-11-20 09:44:45,082 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 09:44:45,083 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-11-20 09:44:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 09:44:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 09:44:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 09:44:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-20 09:44:45,092 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2019-11-20 09:44:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:44:45,092 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-20 09:44:45,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 09:44:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-20 09:44:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:44:45,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:44:45,094 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:44:45,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:44:45,297 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:44:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:44:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-20 09:44:45,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:44:45,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1227612463] [2019-11-20 09:44:45,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f860d4f0-edf2-4a58-bcee-c48828c4eebe/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 [2019-11-20 09:44:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:44:45,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-20 09:44:45,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:44:45,636 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 09:44:45,637 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:45,651 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:45,651 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:45,652 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-20 09:44:45,720 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:45,721 INFO L377 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 [2019-11-20 09:44:45,722 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:45,777 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-20 09:44:45,778 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. [2019-11-20 09:44:45,779 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-11-20 09:44:45,891 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:45,892 INFO L377 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 [2019-11-20 09:44:45,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:45,977 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.9 percent of original size [2019-11-20 09:44:45,979 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. [2019-11-20 09:44:45,979 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:29 [2019-11-20 09:44:46,065 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,066 INFO L377 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 [2019-11-20 09:44:46,068 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,166 INFO L567 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2019-11-20 09:44:46,167 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. [2019-11-20 09:44:46,167 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:40 [2019-11-20 09:44:46,257 INFO L377 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 [2019-11-20 09:44:46,258 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,327 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,329 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. [2019-11-20 09:44:46,329 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55 [2019-11-20 09:44:46,432 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,433 INFO L377 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 [2019-11-20 09:44:46,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,480 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,481 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,481 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:37 [2019-11-20 09:44:46,542 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|]} [2019-11-20 09:44:46,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:46,576 INFO L377 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 [2019-11-20 09:44:46,577 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,735 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-20 09:44:46,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:46,751 INFO L377 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 [2019-11-20 09:44:46,752 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,823 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,828 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:46,879 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,894 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:46,898 INFO L377 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 [2019-11-20 09:44:46,898 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:46,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:46,950 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:101, output treesize:57 [2019-11-20 09:44:47,019 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.base_25|], 4=[|v_#memory_int_32|]} [2019-11-20 09:44:47,055 INFO L377 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 [2019-11-20 09:44:47,056 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,120 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,132 INFO L377 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 [2019-11-20 09:44:47,133 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,284 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-11-20 09:44:47,285 INFO L567 ElimStorePlain]: treesize reduction 4, result has 95.2 percent of original size [2019-11-20 09:44:47,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:47,304 INFO L377 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 [2019-11-20 09:44:47,305 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,347 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,348 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. [2019-11-20 09:44:47,349 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:91, output treesize:64 [2019-11-20 09:44:47,616 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|]} [2019-11-20 09:44:47,625 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:47,746 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-20 09:44:47,746 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,753 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:44:47,805 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,822 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:44:47,823 INFO L377 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 [2019-11-20 09:44:47,824 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,886 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:47,887 INFO L377 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 [2019-11-20 09:44:47,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:47,897 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:44:47,904 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:47,911 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 09:44:47,911 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,913 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,913 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:44:47,946 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,967 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:44:47,967 INFO L377 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 [2019-11-20 09:44:47,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:44:47,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:44:47,972 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:44:47,973 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_24], 1=[v_arrayElimCell_25]} [2019-11-20 09:44:48,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:44:48,177 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.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-20 09:44:48,181 INFO L168 Benchmark]: Toolchain (without parser) took 7607.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:48,181 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:44:48,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:48,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.43 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:48,183 INFO L168 Benchmark]: Boogie Preprocessor took 39.40 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. [2019-11-20 09:44:48,183 INFO L168 Benchmark]: RCFGBuilder took 516.48 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:48,184 INFO L168 Benchmark]: TraceAbstraction took 6363.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -37.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:44:48,187 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 624.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.43 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.40 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 516.48 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6363.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -37.1 MB). Peak memory consumption was 24.8 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...