./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 0.1.24-6b5699a [2019-11-25 08:47:00,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:00,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:00,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:00,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:00,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:00,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:00,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:00,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:00,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:00,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:00,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:00,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:00,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:00,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:00,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:00,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:00,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:00,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:00,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:00,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:00,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:00,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:00,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:00,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:00,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:00,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:00,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:00,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:00,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:00,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:00,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:00,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:00,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:00,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:00,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:00,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:00,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:00,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:00,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:00,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:00,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:47:00,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:00,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:00,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:00,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:00,299 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:00,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:00,300 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:00,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:00,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:00,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:00,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:00,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:00,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:00,301 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:00,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:00,301 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:00,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:00,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:00,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:00,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:00,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:00,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:00,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:00,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:00,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:00,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:00,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:47:00,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:00,305 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_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:00,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:00,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:00,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:00,494 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:00,495 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:00,495 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-25 08:47:00,545 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/0bf6d9143/4246e2cd54e14e0a993b800d8a0af795/FLAG8c250ee1a [2019-11-25 08:47:01,025 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:01,025 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-25 08:47:01,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/0bf6d9143/4246e2cd54e14e0a993b800d8a0af795/FLAG8c250ee1a [2019-11-25 08:47:01,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/0bf6d9143/4246e2cd54e14e0a993b800d8a0af795 [2019-11-25 08:47:01,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:01,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:01,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:01,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:01,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:01,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24acfad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01, skipping insertion in model container [2019-11-25 08:47:01,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:01,099 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:01,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:01,500 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:01,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:01,618 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:01,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01 WrapperNode [2019-11-25 08:47:01,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:01,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:01,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:01,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:01,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:01,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:01,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:01,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:01,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... [2019-11-25 08:47:01,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:01,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:01,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:01,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:01,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:47:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:47:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:47:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:47:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:47:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:47:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:02,106 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:02,107 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-25 08:47:02,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:02 BoogieIcfgContainer [2019-11-25 08:47:02,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:02,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:02,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:02,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:02,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:01" (1/3) ... [2019-11-25 08:47:02,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626f228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:02, skipping insertion in model container [2019-11-25 08:47:02,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:01" (2/3) ... [2019-11-25 08:47:02,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626f228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:02, skipping insertion in model container [2019-11-25 08:47:02,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:02" (3/3) ... [2019-11-25 08:47:02,119 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-25 08:47:02,129 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:02,136 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:47:02,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:47:02,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:02,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:02,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:02,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:02,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:02,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:02,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:02,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-25 08:47:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:47:02,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:02,199 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:02,199 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:02,204 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-25 08:47:02,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:02,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065432739] [2019-11-25 08:47:02,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:02,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065432739] [2019-11-25 08:47:02,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:02,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:47:02,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403656387] [2019-11-25 08:47:02,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:02,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:02,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:02,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:02,381 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-25 08:47:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:02,418 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-11-25 08:47:02,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:02,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-25 08:47:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:02,429 INFO L225 Difference]: With dead ends: 43 [2019-11-25 08:47:02,429 INFO L226 Difference]: Without dead ends: 21 [2019-11-25 08:47:02,431 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 [2019-11-25 08:47:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-25 08:47:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-25 08:47:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:47:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-25 08:47:02,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-11-25 08:47:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:02,463 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:47:02,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-25 08:47:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:47:02,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:02,464 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:02,464 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-11-25 08:47:02,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:02,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001860625] [2019-11-25 08:47:02,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:02,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001860625] [2019-11-25 08:47:02,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649542297] [2019-11-25 08:47:02,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:02,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:02,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:02,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:02,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-25 08:47:02,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720719366] [2019-11-25 08:47:02,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:02,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:02,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:02,658 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-25 08:47:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:02,690 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-25 08:47:02,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:47:02,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-25 08:47:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:02,691 INFO L225 Difference]: With dead ends: 35 [2019-11-25 08:47:02,692 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:47:02,692 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 [2019-11-25 08:47:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:47:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-25 08:47:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:47:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-25 08:47:02,697 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-11-25 08:47:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:02,697 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-25 08:47:02,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-25 08:47:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:47:02,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:02,698 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:02,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:02,902 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:02,902 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-11-25 08:47:02,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:02,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394897288] [2019-11-25 08:47:02,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:03,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394897288] [2019-11-25 08:47:03,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536651379] [2019-11-25 08:47:03,028 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:03,098 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:03,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:03,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:03,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:03,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:03,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-25 08:47:03,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172690272] [2019-11-25 08:47:03,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:47:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:47:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:03,126 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-25 08:47:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:03,156 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-25 08:47:03,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:03,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:47:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:03,157 INFO L225 Difference]: With dead ends: 38 [2019-11-25 08:47:03,157 INFO L226 Difference]: Without dead ends: 27 [2019-11-25 08:47:03,158 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 [2019-11-25 08:47:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-25 08:47:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-25 08:47:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:47:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-25 08:47:03,162 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-25 08:47:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:03,162 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-25 08:47:03,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:47:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-25 08:47:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:47:03,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:03,164 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:03,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:03,376 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:03,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-11-25 08:47:03,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:03,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314514979] [2019-11-25 08:47:03,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:03,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314514979] [2019-11-25 08:47:03,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252702371] [2019-11-25 08:47:03,493 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:03,582 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:47:03,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:03,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-25 08:47:03,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:03,674 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 [2019-11-25 08:47:03,675 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,687 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:03,687 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,687 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-25 08:47:03,721 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 [2019-11-25 08:47:03,722 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,728 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:03,729 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,729 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-11-25 08:47:03,786 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 [2019-11-25 08:47:03,787 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,791 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:03,792 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:03,792 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-25 08:47:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:47:03,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:03,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-11-25 08:47:03,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41379304] [2019-11-25 08:47:03,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:47:03,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:03,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:47:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:47:03,813 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2019-11-25 08:47:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:04,280 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-25 08:47:04,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:47:04,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-25 08:47:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:04,283 INFO L225 Difference]: With dead ends: 41 [2019-11-25 08:47:04,283 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:47:04,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:47:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:47:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-25 08:47:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:47:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-25 08:47:04,289 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2019-11-25 08:47:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:04,289 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-25 08:47:04,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:47:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-25 08:47:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:47:04,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:04,291 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:04,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:04,493 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-25 08:47:04,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:04,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847842365] [2019-11-25 08:47:04,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:47:05,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847842365] [2019-11-25 08:47:05,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908353887] [2019-11-25 08:47:05,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:05,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-25 08:47:05,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:05,505 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 [2019-11-25 08:47:05,505 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,512 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,513 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,513 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-25 08:47:05,613 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|]} [2019-11-25 08:47:05,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:05,623 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 [2019-11-25 08:47:05,623 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,646 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:05,652 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 [2019-11-25 08:47:05,653 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,670 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,681 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 [2019-11-25 08:47:05,681 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,712 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,728 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:47:05,740 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,740 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 [2019-11-25 08:47:05,741 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,775 INFO L567 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2019-11-25 08:47:05,776 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,776 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:37 [2019-11-25 08:47:05,839 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,840 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 [2019-11-25 08:47:05,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:05,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:05,844 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:05,912 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.7 percent of original size [2019-11-25 08:47:05,929 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,930 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 [2019-11-25 08:47:05,930 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:05,980 INFO L567 ElimStorePlain]: treesize reduction 16, result has 81.0 percent of original size [2019-11-25 08:47:05,991 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:05,991 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 [2019-11-25 08:47:05,992 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:06,029 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2019-11-25 08:47:06,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:06,031 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. [2019-11-25 08:47:06,031 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:69, output treesize:53 [2019-11-25 08:47:06,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:06,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:06,205 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|]} [2019-11-25 08:47:06,211 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:06,247 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:06,250 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:06,280 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:06,296 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:06,296 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 [2019-11-25 08:47:06,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:06,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:06,303 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:47:06,303 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-11-25 08:47:06,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:06,506 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) [2019-11-25 08:47:06,509 INFO L168 Benchmark]: Toolchain (without parser) took 5457.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 946.0 MB in the beginning and 955.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:06,509 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:06,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:06,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.23 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:06,510 INFO L168 Benchmark]: Boogie Preprocessor took 50.28 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. [2019-11-25 08:47:06,511 INFO L168 Benchmark]: RCFGBuilder took 369.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:06,511 INFO L168 Benchmark]: TraceAbstraction took 4398.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.6 MB in the end (delta: 128.0 MB). Peak memory consumption was 128.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:06,514 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.23 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.28 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 369.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4398.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.6 MB in the end (delta: 128.0 MB). Peak memory consumption was 128.0 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 0.1.24-6b5699a [2019-11-25 08:47:08,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:08,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:08,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:08,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:08,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:08,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:08,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:08,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:08,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:08,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:08,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:08,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:08,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:08,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:08,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:08,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:08,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:08,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:08,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:08,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:08,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:08,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:08,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:08,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:08,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:08,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:08,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:08,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:08,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:08,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:08,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:08,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:08,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:08,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:08,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:08,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:08,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:08,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:08,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:08,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:08,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:47:08,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:08,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:08,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:08,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:08,428 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:08,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:08,428 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:08,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:08,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:08,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:08,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:08,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:08,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:47:08,430 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:47:08,430 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:47:08,430 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:08,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:08,431 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:08,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:08,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:08,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:08,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:08,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:08,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:08,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:08,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:08,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:08,433 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:47:08,434 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:47:08,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:08,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:47:08,435 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_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:08,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:08,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:08,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:08,774 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:08,775 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:08,775 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-25 08:47:08,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/c3d6013c2/4a92900de3fc4e8db16c0baba15ecef6/FLAGf1341f687 [2019-11-25 08:47:09,228 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:09,231 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-25 08:47:09,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/c3d6013c2/4a92900de3fc4e8db16c0baba15ecef6/FLAGf1341f687 [2019-11-25 08:47:09,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/bin/uautomizer/data/c3d6013c2/4a92900de3fc4e8db16c0baba15ecef6 [2019-11-25 08:47:09,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:09,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:09,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:09,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:09,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:09,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4d02d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09, skipping insertion in model container [2019-11-25 08:47:09,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:09,616 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:10,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:10,052 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:10,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:10,184 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:10,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10 WrapperNode [2019-11-25 08:47:10,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:10,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:10,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:10,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:10,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:10,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:10,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:10,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:10,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... [2019-11-25 08:47:10,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:10,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:10,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:10,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:10,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:47:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:47:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:47:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:47:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:47:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:47:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:10,664 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:10,664 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-25 08:47:10,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:10 BoogieIcfgContainer [2019-11-25 08:47:10,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:10,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:10,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:10,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:10,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:09" (1/3) ... [2019-11-25 08:47:10,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3da05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:10, skipping insertion in model container [2019-11-25 08:47:10,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:10" (2/3) ... [2019-11-25 08:47:10,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3da05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:10, skipping insertion in model container [2019-11-25 08:47:10,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:10" (3/3) ... [2019-11-25 08:47:10,672 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-25 08:47:10,681 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:10,687 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:47:10,697 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:47:10,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:10,715 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:10,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:10,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:10,716 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:10,716 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:10,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:10,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-25 08:47:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:47:10,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:10,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:10,732 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-25 08:47:10,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:10,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [639702312] [2019-11-25 08:47:10,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:10,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:10,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:10,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:10,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [639702312] [2019-11-25 08:47:10,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:10,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:47:10,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416331182] [2019-11-25 08:47:10,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:47:10,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:10,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:47:10,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:10,974 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-25 08:47:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:11,037 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-25 08:47:11,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:47:11,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-25 08:47:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:11,049 INFO L225 Difference]: With dead ends: 44 [2019-11-25 08:47:11,050 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:47:11,054 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 [2019-11-25 08:47:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:47:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-25 08:47:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:47:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-25 08:47:11,085 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-11-25 08:47:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:11,086 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-25 08:47:11,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:47:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-25 08:47:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:47:11,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:11,087 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:11,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:11,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-11-25 08:47:11,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:11,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1832336989] [2019-11-25 08:47:11,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:11,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:11,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:11,497 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:11,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832336989] [2019-11-25 08:47:11,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:11,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-25 08:47:11,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692720805] [2019-11-25 08:47:11,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:47:11,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:47:11,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:47:11,578 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-25 08:47:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:11,737 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-25 08:47:11,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:11,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-25 08:47:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:11,740 INFO L225 Difference]: With dead ends: 39 [2019-11-25 08:47:11,741 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:47:11,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:47:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:47:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:47:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:47:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-25 08:47:11,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-25 08:47:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:11,748 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-25 08:47:11,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:47:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-25 08:47:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:47:11,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:11,753 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:11,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:11,954 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:11,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-11-25 08:47:11,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:11,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [310328895] [2019-11-25 08:47:11,956 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:12,170 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:12,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:12,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:47:12,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:12,247 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 [2019-11-25 08:47:12,248 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,267 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:12,268 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,268 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-25 08:47:12,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:12,303 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 [2019-11-25 08:47:12,303 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,318 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:12,318 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,319 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:47:12,374 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 [2019-11-25 08:47:12,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:12,388 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,388 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-25 08:47:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:47:12,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:12,504 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:12,510 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:12,511 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:12,511 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:17 [2019-11-25 08:47:12,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:12,628 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:12,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-25 08:47:12,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:12,632 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-25 08:47:12,632 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2019-11-25 08:47:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:47:12,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [310328895] [2019-11-25 08:47:12,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:12,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-25 08:47:12,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822584318] [2019-11-25 08:47:12,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:47:12,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:47:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:47:12,769 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 14 states. [2019-11-25 08:47:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:13,319 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-25 08:47:13,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:47:13,320 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2019-11-25 08:47:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:13,321 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:47:13,321 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:47:13,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:47:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:47:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-25 08:47:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:47:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-25 08:47:13,330 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2019-11-25 08:47:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:13,330 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-25 08:47:13,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:47:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-25 08:47:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:47:13,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:13,332 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:13,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:13,540 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-25 08:47:13,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:13,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1976458375] [2019-11-25 08:47:13,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0126fb13-d768-460a-b9c5-ad1ec9883f3f/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 [2019-11-25 08:47:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:13,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-25 08:47:13,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:13,813 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 [2019-11-25 08:47:13,814 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:13,828 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:13,829 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:13,829 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-25 08:47:13,877 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:13,878 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 [2019-11-25 08:47:13,879 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:13,924 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-25 08:47:13,925 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. [2019-11-25 08:47:13,925 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-11-25 08:47:14,012 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,012 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 [2019-11-25 08:47:14,013 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,080 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.9 percent of original size [2019-11-25 08:47:14,081 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. [2019-11-25 08:47:14,081 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:29 [2019-11-25 08:47:14,154 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,155 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 [2019-11-25 08:47:14,156 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,266 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-11-25 08:47:14,268 INFO L567 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2019-11-25 08:47:14,269 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. [2019-11-25 08:47:14,269 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:40 [2019-11-25 08:47:14,335 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 [2019-11-25 08:47:14,335 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,367 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,368 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. [2019-11-25 08:47:14,368 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55 [2019-11-25 08:47:14,453 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,454 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 [2019-11-25 08:47:14,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,495 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,496 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,497 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:37 [2019-11-25 08:47:14,541 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|]} [2019-11-25 08:47:14,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:14,564 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 [2019-11-25 08:47:14,564 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,662 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,678 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:14,679 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 [2019-11-25 08:47:14,680 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,734 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,740 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:14,780 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,802 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:14,803 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 [2019-11-25 08:47:14,803 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,836 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,837 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,837 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:101, output treesize:57 [2019-11-25 08:47:14,908 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.base_25|], 4=[|v_#memory_int_32|]} [2019-11-25 08:47:14,917 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 [2019-11-25 08:47:14,917 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:14,961 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:14,975 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 [2019-11-25 08:47:14,976 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,093 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-11-25 08:47:15,094 INFO L567 ElimStorePlain]: treesize reduction 4, result has 95.2 percent of original size [2019-11-25 08:47:15,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:15,114 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 [2019-11-25 08:47:15,115 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,152 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,152 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. [2019-11-25 08:47:15,153 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:91, output treesize:64 [2019-11-25 08:47:15,292 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|]} [2019-11-25 08:47:15,299 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:15,381 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,387 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:47:15,429 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,455 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:47:15,457 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 [2019-11-25 08:47:15,457 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:15,513 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 [2019-11-25 08:47:15,520 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:15,521 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:47:15,526 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:15,531 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 [2019-11-25 08:47:15,532 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,534 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,534 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,578 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,596 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,596 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 [2019-11-25 08:47:15,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:15,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:47:15,602 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:47:15,602 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_24], 1=[v_arrayElimCell_25]} [2019-11-25 08:47:15,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:15,805 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) [2019-11-25 08:47:15,809 INFO L168 Benchmark]: Toolchain (without parser) took 6258.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 182.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -155.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:15,809 INFO L168 Benchmark]: CDTParser took 0.16 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. [2019-11-25 08:47:15,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -139.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:15,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:15,810 INFO L168 Benchmark]: Boogie Preprocessor took 33.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:15,811 INFO L168 Benchmark]: RCFGBuilder took 399.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:15,812 INFO L168 Benchmark]: TraceAbstraction took 5141.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -53.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:15,814 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 633.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -139.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 399.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5141.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -53.1 MB). Peak memory consumption was 20.8 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...