./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/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 9a4ddf68ce78594ceb913525b55d91f3f2dce46f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/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 9a4ddf68ce78594ceb913525b55d91f3f2dce46f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:30:17,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:30:17,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:30:17,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:30:17,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:30:17,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:30:17,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:30:17,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:30:17,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:30:17,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:30:17,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:30:17,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:30:17,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:30:17,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:30:17,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:30:17,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:30:17,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:30:17,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:30:17,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:30:17,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:30:17,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:30:17,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:30:17,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:30:17,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:30:17,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:30:17,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:30:17,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:30:17,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:30:17,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:30:17,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:30:17,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:30:17,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:30:17,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:30:17,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:30:17,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:30:17,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:30:17,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:30:17,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:30:17,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:30:17,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:30:17,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:30:17,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:30:17,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:30:17,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:30:17,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:30:17,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:30:17,882 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:30:17,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:30:17,883 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:30:17,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:30:17,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:30:17,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:30:17,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:30:17,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:30:17,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:30:17,884 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:30:17,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:30:17,885 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:30:17,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:30:17,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:30:17,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:30:17,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:30:17,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:30:17,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:30:17,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:30:17,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:30:17,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:30:17,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:30:17,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:30:17,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:30:17,888 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_bd714800-62fa-4135-8405-4068e1933d2b/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 -> 9a4ddf68ce78594ceb913525b55d91f3f2dce46f [2019-11-20 00:30:18,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:30:18,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:30:18,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:30:18,062 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:30:18,066 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:30:18,066 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/../../sv-benchmarks/c/heap-data/packet_filter.i [2019-11-20 00:30:18,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/9710beb3e/a49c127c21d54fe9bfaa162d33a6918c/FLAG26dde1f27 [2019-11-20 00:30:18,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:30:18,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/sv-benchmarks/c/heap-data/packet_filter.i [2019-11-20 00:30:18,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/9710beb3e/a49c127c21d54fe9bfaa162d33a6918c/FLAG26dde1f27 [2019-11-20 00:30:18,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/9710beb3e/a49c127c21d54fe9bfaa162d33a6918c [2019-11-20 00:30:18,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:30:18,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:30:18,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:30:18,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:30:18,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:30:18,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:18" (1/1) ... [2019-11-20 00:30:18,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbd6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:18, skipping insertion in model container [2019-11-20 00:30:18,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:18" (1/1) ... [2019-11-20 00:30:18,972 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:30:19,020 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:30:19,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:30:19,450 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:30:19,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:30:19,578 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:30:19,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19 WrapperNode [2019-11-20 00:30:19,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:30:19,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:30:19,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:30:19,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:30:19,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:30:19,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:30:19,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:30:19,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:30:19,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... [2019-11-20 00:30:19,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:30:19,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:30:19,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:30:19,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:30:19,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:30:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 00:30:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 00:30:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 00:30:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 00:30:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:30:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 00:30:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2019-11-20 00:30:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 00:30:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 00:30:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 00:30:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:30:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:30:20,585 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:30:20,585 INFO L285 CfgBuilder]: Removed 23 assume(true) statements. [2019-11-20 00:30:20,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:20 BoogieIcfgContainer [2019-11-20 00:30:20,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:30:20,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:30:20,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:30:20,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:30:20,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:30:18" (1/3) ... [2019-11-20 00:30:20,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482e7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:20, skipping insertion in model container [2019-11-20 00:30:20,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:19" (2/3) ... [2019-11-20 00:30:20,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482e7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:20, skipping insertion in model container [2019-11-20 00:30:20,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:20" (3/3) ... [2019-11-20 00:30:20,594 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2019-11-20 00:30:20,603 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:30:20,609 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 00:30:20,618 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 00:30:20,641 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:30:20,641 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:30:20,641 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:30:20,641 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:30:20,641 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:30:20,641 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:30:20,641 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:30:20,642 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:30:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-20 00:30:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 00:30:20,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:20,663 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:20,663 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1360133385, now seen corresponding path program 1 times [2019-11-20 00:30:20,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:20,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831019023] [2019-11-20 00:30:20,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:20,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831019023] [2019-11-20 00:30:20,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:20,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:30:20,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24955794] [2019-11-20 00:30:20,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 00:30:20,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:30:20,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 00:30:20,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 00:30:20,813 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-20 00:30:20,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:20,827 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2019-11-20 00:30:20,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 00:30:20,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-20 00:30:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:20,837 INFO L225 Difference]: With dead ends: 58 [2019-11-20 00:30:20,837 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 00:30:20,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 00:30:20,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 00:30:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-20 00:30:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 00:30:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-11-20 00:30:20,871 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 8 [2019-11-20 00:30:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:20,872 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-11-20 00:30:20,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 00:30:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-11-20 00:30:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 00:30:20,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:20,873 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:20,873 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:20,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1245000239, now seen corresponding path program 1 times [2019-11-20 00:30:20,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:20,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103284718] [2019-11-20 00:30:20,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:20,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103284718] [2019-11-20 00:30:20,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:20,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:30:20,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569110092] [2019-11-20 00:30:20,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:30:20,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:30:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:30:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:30:20,962 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2019-11-20 00:30:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:21,304 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-11-20 00:30:21,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 00:30:21,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 00:30:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:21,306 INFO L225 Difference]: With dead ends: 60 [2019-11-20 00:30:21,306 INFO L226 Difference]: Without dead ends: 43 [2019-11-20 00:30:21,307 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:30:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-20 00:30:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2019-11-20 00:30:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 00:30:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2019-11-20 00:30:21,316 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 9 [2019-11-20 00:30:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:21,317 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-11-20 00:30:21,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:30:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2019-11-20 00:30:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 00:30:21,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:21,318 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:21,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1888752216, now seen corresponding path program 1 times [2019-11-20 00:30:21,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:21,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052503604] [2019-11-20 00:30:21,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:21,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052503604] [2019-11-20 00:30:21,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:21,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:30:21,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982137004] [2019-11-20 00:30:21,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:30:21,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:30:21,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:30:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:30:21,421 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 4 states. [2019-11-20 00:30:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:21,591 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-11-20 00:30:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:30:21,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 00:30:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:21,593 INFO L225 Difference]: With dead ends: 46 [2019-11-20 00:30:21,593 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 00:30:21,593 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:30:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 00:30:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-20 00:30:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-20 00:30:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-20 00:30:21,598 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 11 [2019-11-20 00:30:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:21,599 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-20 00:30:21,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:30:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-20 00:30:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 00:30:21,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:21,600 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:21,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1449264443, now seen corresponding path program 1 times [2019-11-20 00:30:21,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:21,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954151733] [2019-11-20 00:30:21,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:30:21,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954151733] [2019-11-20 00:30:21,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:21,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:30:21,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683694541] [2019-11-20 00:30:21,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:30:21,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:30:21,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:30:21,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:30:21,710 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 3 states. [2019-11-20 00:30:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:21,735 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-11-20 00:30:21,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:30:21,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-20 00:30:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:21,738 INFO L225 Difference]: With dead ends: 37 [2019-11-20 00:30:21,738 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 00:30:21,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:30:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 00:30:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-20 00:30:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 00:30:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-11-20 00:30:21,743 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 16 [2019-11-20 00:30:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:21,744 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-11-20 00:30:21,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:30:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-11-20 00:30:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 00:30:21,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:21,745 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:21,745 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1449262521, now seen corresponding path program 1 times [2019-11-20 00:30:21,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:21,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754434191] [2019-11-20 00:30:21,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:21,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754434191] [2019-11-20 00:30:21,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463935113] [2019-11-20 00:30:21,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:30:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:22,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-20 00:30:22,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:22,119 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 00:30:22,120 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 00:30:22,121 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,132 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,133 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:22,133 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2019-11-20 00:30:22,164 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,164 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2019-11-20 00:30:22,165 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,191 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,205 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 23 treesize of output 11 [2019-11-20 00:30:22,205 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,226 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 23 treesize of output 11 [2019-11-20 00:30:22,227 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,238 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,239 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,239 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:58, output treesize:19 [2019-11-20 00:30:22,267 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 27 treesize of output 11 [2019-11-20 00:30:22,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,290 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,304 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:22,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,328 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 21 treesize of output 20 [2019-11-20 00:30:22,329 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,346 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 00:30:22,354 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 26 treesize of output 29 [2019-11-20 00:30:22,354 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,376 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,376 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:83, output treesize:15 [2019-11-20 00:30:22,386 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:22,386 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,394 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,397 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:22,397 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,404 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:22,405 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:22,405 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 00:30:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:22,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:30:22,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 00:30:22,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232357827] [2019-11-20 00:30:22,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 00:30:22,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:30:22,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:30:22,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:30:22,411 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 6 states. [2019-11-20 00:30:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:23,353 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2019-11-20 00:30:23,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 00:30:23,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 00:30:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:23,355 INFO L225 Difference]: With dead ends: 71 [2019-11-20 00:30:23,356 INFO L226 Difference]: Without dead ends: 53 [2019-11-20 00:30:23,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:30:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-20 00:30:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2019-11-20 00:30:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-20 00:30:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-11-20 00:30:23,370 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 16 [2019-11-20 00:30:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:23,371 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-11-20 00:30:23,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 00:30:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-11-20 00:30:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 00:30:23,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:23,381 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:23,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:30:23,586 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:23,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1928933206, now seen corresponding path program 1 times [2019-11-20 00:30:23,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:30:23,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660147705] [2019-11-20 00:30:23,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:30:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:23,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660147705] [2019-11-20 00:30:23,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505499876] [2019-11-20 00:30:23,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:30:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:23,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-20 00:30:23,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:24,067 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_59|], 2=[|v_#memory_int_57|], 3=[|v_#memory_int_58|], 6=[|v_#memory_int_60|], 7=[|v_#memory_$Pointer$.base_67|, |v_#memory_$Pointer$.offset_67|]} [2019-11-20 00:30:24,075 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:24,195 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-20 00:30:24,197 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:24,207 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:24,313 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-20 00:30:24,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:24,319 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:24,387 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:24,423 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:24,423 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 177 [2019-11-20 00:30:24,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:24,446 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_11], 5=[v_arrayElimCell_10]} [2019-11-20 00:30:24,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:30:24,653 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 00:30:24,657 INFO L168 Benchmark]: Toolchain (without parser) took 5701.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -126.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:30:24,658 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:30:24,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:30:24,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.07 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. [2019-11-20 00:30:24,659 INFO L168 Benchmark]: Boogie Preprocessor took 46.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:30:24,660 INFO L168 Benchmark]: RCFGBuilder took 899.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:30:24,662 INFO L168 Benchmark]: TraceAbstraction took 4068.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -30.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:30:24,666 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 622.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.07 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. * Boogie Preprocessor took 46.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 899.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4068.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -30.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 00:30:26,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:30:26,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:30:26,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:30:26,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:30:26,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:30:26,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:30:26,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:30:26,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:30:26,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:30:26,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:30:26,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:30:26,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:30:26,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:30:26,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:30:26,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:30:26,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:30:26,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:30:26,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:30:26,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:30:26,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:30:26,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:30:26,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:30:26,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:30:26,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:30:26,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:30:26,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:30:26,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:30:26,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:30:26,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:30:26,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:30:26,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:30:26,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:30:26,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:30:26,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:30:26,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:30:26,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:30:26,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:30:26,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:30:26,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:30:26,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:30:26,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 00:30:26,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:30:26,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:30:26,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:30:26,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:30:26,747 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:30:26,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:30:26,748 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:30:26,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:30:26,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:30:26,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:30:26,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:30:26,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:30:26,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 00:30:26,751 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 00:30:26,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:30:26,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:30:26,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:30:26,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:30:26,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:30:26,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:30:26,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:30:26,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:30:26,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:30:26,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:30:26,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:30:26,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:30:26,754 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 00:30:26,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 00:30:26,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:30:26,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 00:30:26,755 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_bd714800-62fa-4135-8405-4068e1933d2b/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 -> 9a4ddf68ce78594ceb913525b55d91f3f2dce46f [2019-11-20 00:30:27,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:30:27,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:30:27,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:30:27,071 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:30:27,071 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:30:27,072 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/../../sv-benchmarks/c/heap-data/packet_filter.i [2019-11-20 00:30:27,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/76a4dffe9/f1a22382c524453d82e2ac2adb521a3f/FLAG48c957f73 [2019-11-20 00:30:27,541 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:30:27,542 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/sv-benchmarks/c/heap-data/packet_filter.i [2019-11-20 00:30:27,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/76a4dffe9/f1a22382c524453d82e2ac2adb521a3f/FLAG48c957f73 [2019-11-20 00:30:27,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/data/76a4dffe9/f1a22382c524453d82e2ac2adb521a3f [2019-11-20 00:30:27,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:30:27,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:30:27,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:30:27,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:30:27,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:30:27,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:27" (1/1) ... [2019-11-20 00:30:27,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d27fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:27, skipping insertion in model container [2019-11-20 00:30:27,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:27" (1/1) ... [2019-11-20 00:30:27,876 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:30:27,921 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:30:28,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:30:28,391 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:30:28,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:30:28,520 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:30:28,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28 WrapperNode [2019-11-20 00:30:28,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:30:28,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:30:28,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:30:28,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:30:28,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:30:28,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:30:28,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:30:28,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:30:28,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... [2019-11-20 00:30:28,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:30:28,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:30:28,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:30:28,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:30:28,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:30:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 00:30:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 00:30:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 00:30:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:30:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 00:30:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2019-11-20 00:30:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 00:30:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 00:30:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 00:30:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-20 00:30:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:30:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:30:35,596 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:30:35,596 INFO L285 CfgBuilder]: Removed 23 assume(true) statements. [2019-11-20 00:30:35,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:35 BoogieIcfgContainer [2019-11-20 00:30:35,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:30:35,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:30:35,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:30:35,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:30:35,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:30:27" (1/3) ... [2019-11-20 00:30:35,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660cbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:35, skipping insertion in model container [2019-11-20 00:30:35,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:28" (2/3) ... [2019-11-20 00:30:35,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660cbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:35, skipping insertion in model container [2019-11-20 00:30:35,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:35" (3/3) ... [2019-11-20 00:30:35,605 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2019-11-20 00:30:35,613 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:30:35,618 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 00:30:35,629 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 00:30:35,652 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:30:35,652 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:30:35,652 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:30:35,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:30:35,653 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:30:35,653 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:30:35,653 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:30:35,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:30:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-20 00:30:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 00:30:35,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:35,674 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:35,675 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:35,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:35,681 INFO L82 PathProgramCache]: Analyzing trace with hash 271271342, now seen corresponding path program 1 times [2019-11-20 00:30:35,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:30:35,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [546055691] [2019-11-20 00:30:35,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:35,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:30:35,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:35,946 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:30:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:35,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [546055691] [2019-11-20 00:30:35,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:35,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 00:30:35,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089473934] [2019-11-20 00:30:35,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:30:35,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:30:35,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:30:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:30:35,983 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-11-20 00:30:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:36,036 INFO L93 Difference]: Finished difference Result 58 states and 79 transitions. [2019-11-20 00:30:36,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:30:36,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-20 00:30:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:36,049 INFO L225 Difference]: With dead ends: 58 [2019-11-20 00:30:36,050 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 00:30:36,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:30:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 00:30:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-20 00:30:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 00:30:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-11-20 00:30:36,101 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 8 [2019-11-20 00:30:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:36,102 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-11-20 00:30:36,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:30:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-11-20 00:30:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 00:30:36,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:36,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:36,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:36,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 271273264, now seen corresponding path program 1 times [2019-11-20 00:30:36,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:30:36,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [442043344] [2019-11-20 00:30:36,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:36,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 00:30:36,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:36,519 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:36,522 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:36,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:36,542 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:36,543 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:36,558 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:36,558 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:36,558 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 00:30:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:36,577 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:30:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:36,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [442043344] [2019-11-20 00:30:36,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:36,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 00:30:36,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946395765] [2019-11-20 00:30:36,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:30:36,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:30:36,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:30:36,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:30:36,596 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2019-11-20 00:30:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:42,953 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-11-20 00:30:42,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 00:30:42,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 00:30:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:42,960 INFO L225 Difference]: With dead ends: 60 [2019-11-20 00:30:42,960 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 00:30:42,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:30:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 00:30:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2019-11-20 00:30:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 00:30:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-11-20 00:30:42,973 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 8 [2019-11-20 00:30:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:42,974 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-11-20 00:30:42,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:30:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-11-20 00:30:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 00:30:42,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:42,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:43,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:43,180 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1339351737, now seen corresponding path program 1 times [2019-11-20 00:30:43,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:30:43,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [945007834] [2019-11-20 00:30:43,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:43,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 00:30:43,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:43,346 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:43,346 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:43,359 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:43,363 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:43,363 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:43,372 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:43,373 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:43,373 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 00:30:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:43,397 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:30:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:43,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [945007834] [2019-11-20 00:30:43,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:30:43,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 00:30:43,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661342620] [2019-11-20 00:30:43,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:30:43,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:30:43,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:30:43,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:30:43,413 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 4 states. [2019-11-20 00:30:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:30:49,811 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2019-11-20 00:30:49,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:30:49,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 00:30:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:30:49,813 INFO L225 Difference]: With dead ends: 45 [2019-11-20 00:30:49,813 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 00:30:49,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:30:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 00:30:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-20 00:30:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:30:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-11-20 00:30:49,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 10 [2019-11-20 00:30:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:30:49,819 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-11-20 00:30:49,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:30:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2019-11-20 00:30:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 00:30:49,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:30:49,821 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:30:50,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:50,025 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:30:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:30:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash -789622247, now seen corresponding path program 1 times [2019-11-20 00:30:50,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:30:50,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [668915051] [2019-11-20 00:30:50,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:30:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:30:50,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 00:30:50,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:30:50,292 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-20 00:30:50,292 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 [2019-11-20 00:30:50,293 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,313 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,315 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:50,315 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2019-11-20 00:30:50,404 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,405 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2019-11-20 00:30:50,406 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,503 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,519 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 23 treesize of output 11 [2019-11-20 00:30:50,520 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,583 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,599 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 23 treesize of output 11 [2019-11-20 00:30:50,599 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,645 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,645 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:74, output treesize:22 [2019-11-20 00:30:50,679 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_64|, |v_#memory_$Pointer$.offset_64|], 2=[|v_#memory_$Pointer$.base_66|, |v_#memory_$Pointer$.offset_66|]} [2019-11-20 00:30:50,688 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:50,823 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-11-20 00:30:50,824 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,831 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:50,919 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,930 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2019-11-20 00:30:50,931 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:50,988 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:50,996 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 22 treesize of output 25 [2019-11-20 00:30:50,997 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,039 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,040 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,041 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:71, output treesize:15 [2019-11-20 00:30:51,070 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:51,071 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,084 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,086 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 00:30:51,087 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,094 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,095 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 00:30:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:51,120 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:30:51,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:51,160 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,168 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:51,261 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,272 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:51,283 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,319 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,320 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2019-11-20 00:30:51,320 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:117, output treesize:45 [2019-11-20 00:30:51,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:30:51,480 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:51,497 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,695 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-20 00:30:51,696 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,702 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:30:51,719 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 00:30:51,833 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-20 00:30:51,834 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:30:51,835 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2019-11-20 00:30:51,836 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:121, output treesize:63 [2019-11-20 00:30:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:30:51,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668915051] [2019-11-20 00:30:51,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:30:51,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-11-20 00:30:51,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074432773] [2019-11-20 00:30:51,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 00:30:51,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:30:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 00:30:51,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:30:51,967 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 8 states. [2019-11-20 00:30:54,256 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2019-11-20 00:31:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:31:07,864 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2019-11-20 00:31:07,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 00:31:07,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-20 00:31:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:31:07,866 INFO L225 Difference]: With dead ends: 68 [2019-11-20 00:31:07,866 INFO L226 Difference]: Without dead ends: 50 [2019-11-20 00:31:07,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-20 00:31:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-20 00:31:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2019-11-20 00:31:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-20 00:31:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2019-11-20 00:31:07,876 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 14 [2019-11-20 00:31:07,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:31:07,876 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-20 00:31:07,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 00:31:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2019-11-20 00:31:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 00:31:07,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:31:07,878 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:31:08,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:31:08,084 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:31:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:31:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1431194442, now seen corresponding path program 1 times [2019-11-20 00:31:08,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:31:08,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [566663751] [2019-11-20 00:31:08,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd714800-62fa-4135-8405-4068e1933d2b/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:31:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:31:08,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-20 00:31:08,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:31:08,431 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_60|], 2=[|v_#memory_int_59|], 3=[|v_#memory_int_61|], 6=[|v_#memory_int_62|], 7=[|v_#memory_$Pointer$.offset_69|, |v_#memory_$Pointer$.base_69|]} [2019-11-20 00:31:08,535 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:31:10,179 WARN L191 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 76 [2019-11-20 00:31:10,180 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:31:10,223 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:31:11,633 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 73 [2019-11-20 00:31:11,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:31:11,671 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 00:31:13,242 WARN L191 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 70 [2019-11-20 00:31:13,243 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:31:13,321 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 00:31:13,322 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 215 treesize of output 175 [2019-11-20 00:31:13,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:31:13,367 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_15], 5=[v_arrayElimCell_16]} [2019-11-20 00:31:13,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 00:31:13,587 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 00:31:13,591 INFO L168 Benchmark]: Toolchain (without parser) took 45730.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -208.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:31:13,592 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:31:13,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-20 00:31:13,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:31:13,593 INFO L168 Benchmark]: Boogie Preprocessor took 73.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 00:31:13,594 INFO L168 Benchmark]: RCFGBuilder took 6940.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:31:13,595 INFO L168 Benchmark]: TraceAbstraction took 37991.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:31:13,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 660.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 6940.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 37991.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.5 MB). There was no memory consumed. 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...