./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 9b2ac5a3750101337b54db0fb388c91c5409545e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 9b2ac5a3750101337b54db0fb388c91c5409545e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_15 term size 13 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:49:34,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:49:34,576 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:49:34,583 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:49:34,583 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:49:34,584 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:49:34,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:49:34,586 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:49:34,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:49:34,587 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:49:34,588 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:49:34,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:49:34,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:49:34,589 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:49:34,590 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:49:34,590 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:49:34,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:49:34,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:49:34,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:49:34,593 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:49:34,594 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:49:34,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:49:34,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:49:34,596 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:49:34,596 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:49:34,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:49:34,597 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:49:34,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:49:34,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:49:34,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:49:34,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:49:34,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:49:34,599 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:49:34,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:49:34,600 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:49:34,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:49:34,601 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 14:49:34,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:49:34,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:49:34,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:49:34,611 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 14:49:34,612 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:49:34,612 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:49:34,612 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:49:34,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:49:34,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:49:34,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:49:34,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:49:34,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:49:34,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 -> 9b2ac5a3750101337b54db0fb388c91c5409545e [2018-11-18 14:49:34,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:49:34,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:49:34,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:49:34,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:49:34,653 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:49:34,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:34,700 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/e924fc2f5/6990e92d6f5340a4b472a1d71914ddd9/FLAG46b90bce2 [2018-11-18 14:49:35,077 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:49:35,077 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:35,087 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/e924fc2f5/6990e92d6f5340a4b472a1d71914ddd9/FLAG46b90bce2 [2018-11-18 14:49:35,460 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/e924fc2f5/6990e92d6f5340a4b472a1d71914ddd9 [2018-11-18 14:49:35,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:49:35,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:49:35,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:49:35,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:49:35,466 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:49:35,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68691db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35, skipping insertion in model container [2018-11-18 14:49:35,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:49:35,501 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:49:35,700 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:49:35,707 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:49:35,781 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:49:35,809 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:49:35,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35 WrapperNode [2018-11-18 14:49:35,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:49:35,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:49:35,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:49:35,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:49:35,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... [2018-11-18 14:49:35,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:49:35,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:49:35,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:49:35,855 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:49:35,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 14:49:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 14:49:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 14:49:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 14:49:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-18 14:49:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:49:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:49:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 14:49:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 14:49:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 14:49:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 14:49:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 14:49:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 14:49:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 14:49:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 14:49:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 14:49:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 14:49:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 14:49:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 14:49:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 14:49:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 14:49:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:49:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 14:49:36,222 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:49:36,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:36 BoogieIcfgContainer [2018-11-18 14:49:36,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:49:36,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:49:36,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:49:36,225 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:49:36,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:49:35" (1/3) ... [2018-11-18 14:49:36,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764015f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:36, skipping insertion in model container [2018-11-18 14:49:36,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35" (2/3) ... [2018-11-18 14:49:36,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764015f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:36, skipping insertion in model container [2018-11-18 14:49:36,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:36" (3/3) ... [2018-11-18 14:49:36,228 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:36,233 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:49:36,239 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:49:36,247 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:49:36,268 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:49:36,268 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:49:36,268 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:49:36,268 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:49:36,268 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:49:36,268 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:49:36,269 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:49:36,269 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:49:36,269 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:49:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-11-18 14:49:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 14:49:36,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:36,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:36,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:36,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1705755525, now seen corresponding path program 1 times [2018-11-18 14:49:36,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:36,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:36,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:36,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:36,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:36,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:49:36,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:49:36,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:49:36,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:49:36,435 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2018-11-18 14:49:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:36,450 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2018-11-18 14:49:36,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:49:36,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-18 14:49:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:36,456 INFO L225 Difference]: With dead ends: 91 [2018-11-18 14:49:36,456 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 14:49:36,458 INFO L604 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 [2018-11-18 14:49:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 14:49:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 14:49:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 14:49:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 14:49:36,484 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-11-18 14:49:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:36,484 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 14:49:36,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:49:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 14:49:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 14:49:36,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:36,485 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:36,486 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:36,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash -374766804, now seen corresponding path program 1 times [2018-11-18 14:49:36,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:36,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:36,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:36,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:36,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:36,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 14:49:36,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:49:36,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:49:36,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:49:36,663 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 10 states. [2018-11-18 14:49:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:36,801 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 14:49:36,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 14:49:36,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-11-18 14:49:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:36,804 INFO L225 Difference]: With dead ends: 46 [2018-11-18 14:49:36,804 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 14:49:36,805 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-18 14:49:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 14:49:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-18 14:49:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 14:49:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-18 14:49:36,814 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2018-11-18 14:49:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:36,814 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-18 14:49:36,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:49:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-18 14:49:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 14:49:36,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:36,815 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:36,815 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:36,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash -374765130, now seen corresponding path program 1 times [2018-11-18 14:49:36,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:36,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:36,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:36,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:36,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:36,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 14:49:36,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 14:49:36,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:49:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:49:36,869 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2018-11-18 14:49:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:36,896 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2018-11-18 14:49:36,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:49:36,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 14:49:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:36,898 INFO L225 Difference]: With dead ends: 72 [2018-11-18 14:49:36,898 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 14:49:36,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:49:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 14:49:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-11-18 14:49:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 14:49:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-11-18 14:49:36,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 32 [2018-11-18 14:49:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:36,903 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-11-18 14:49:36,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 14:49:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-11-18 14:49:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 14:49:36,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:36,904 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:36,905 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:36,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:36,905 INFO L82 PathProgramCache]: Analyzing trace with hash 11962850, now seen corresponding path program 1 times [2018-11-18 14:49:36,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:36,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:36,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:36,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:36,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:36,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:49:36,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:49:36,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:49:36,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:49:36,958 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 3 states. [2018-11-18 14:49:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:36,975 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2018-11-18 14:49:36,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:49:36,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-18 14:49:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:36,976 INFO L225 Difference]: With dead ends: 78 [2018-11-18 14:49:36,976 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 14:49:36,976 INFO L604 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 [2018-11-18 14:49:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 14:49:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-11-18 14:49:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 14:49:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-11-18 14:49:36,980 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 38 [2018-11-18 14:49:36,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:36,980 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-11-18 14:49:36,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:49:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-11-18 14:49:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 14:49:36,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:36,981 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:36,982 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:36,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:36,982 INFO L82 PathProgramCache]: Analyzing trace with hash 74002464, now seen corresponding path program 1 times [2018-11-18 14:49:36,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:36,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:36,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:36,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:37,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:49:37,051 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:49:37,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:37,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:37,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:49:37,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 14:49:37,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 14:49:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:49:37,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:49:37,147 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2018-11-18 14:49:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:37,186 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2018-11-18 14:49:37,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:49:37,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-18 14:49:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:37,188 INFO L225 Difference]: With dead ends: 78 [2018-11-18 14:49:37,188 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 14:49:37,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:49:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 14:49:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-11-18 14:49:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 14:49:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-11-18 14:49:37,192 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 38 [2018-11-18 14:49:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:37,193 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-11-18 14:49:37,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 14:49:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-11-18 14:49:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 14:49:37,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:37,194 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:37,194 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:37,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:37,194 INFO L82 PathProgramCache]: Analyzing trace with hash 32913612, now seen corresponding path program 1 times [2018-11-18 14:49:37,194 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:37,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:37,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:37,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:37,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 14:49:37,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:37,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 14:49:37,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 14:49:37,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 14:49:37,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:49:37,508 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 12 states. [2018-11-18 14:49:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:37,715 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-11-18 14:49:37,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:49:37,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2018-11-18 14:49:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:37,716 INFO L225 Difference]: With dead ends: 51 [2018-11-18 14:49:37,716 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 14:49:37,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-11-18 14:49:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 14:49:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 14:49:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 14:49:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-18 14:49:37,721 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 44 [2018-11-18 14:49:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:37,722 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-18 14:49:37,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 14:49:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-18 14:49:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 14:49:37,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:37,724 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:37,724 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:37,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1278108350, now seen corresponding path program 1 times [2018-11-18 14:49:37,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:49:37,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:49:37,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:37,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:37,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:49:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:38,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:49:38,313 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:49:38,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:38,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:38,359 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 14:49:38,360 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:38,363 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:38,363 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 14:49:40,395 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:40,395 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:40,396 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:40,397 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-11-18 14:49:40,400 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-11-18 14:49:40,401 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:40,408 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:40,415 INFO L267 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. [2018-11-18 14:49:40,416 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:35 [2018-11-18 14:49:40,453 INFO L477 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 11 treesize of output 8 [2018-11-18 14:49:40,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:40,455 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:40,456 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:40,465 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:40,466 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:51 [2018-11-18 14:49:40,694 INFO L477 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 149 treesize of output 147 [2018-11-18 14:49:40,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 145 [2018-11-18 14:49:40,698 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:40,701 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:40,726 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:40,726 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:164, output treesize:160 [2018-11-18 14:49:42,195 WARN L180 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-18 14:49:42,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:49:42,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:42,208 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,211 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,222 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:42,222 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:296, output treesize:292 [2018-11-18 14:49:42,415 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 56 [2018-11-18 14:49:42,419 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,422 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,423 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 37 [2018-11-18 14:49:42,424 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,446 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,447 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,467 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,468 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:42,469 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 14:49:42,470 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2018-11-18 14:49:42,518 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2018-11-18 14:49:42,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2018-11-18 14:49:42,521 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,528 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 96 [2018-11-18 14:49:42,553 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 52 [2018-11-18 14:49:42,554 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:42,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-11-18 14:49:42,571 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:42,588 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 19 treesize of output 22 [2018-11-18 14:49:42,791 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:49:42,791 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_6 term size 12 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) 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:123) 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) [2018-11-18 14:49:42,794 INFO L168 Benchmark]: Toolchain (without parser) took 7331.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2018-11-18 14:49:42,794 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:49:42,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-11-18 14:49:42,795 INFO L168 Benchmark]: Boogie Preprocessor took 43.70 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:49:42,795 INFO L168 Benchmark]: RCFGBuilder took 368.10 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: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:49:42,796 INFO L168 Benchmark]: TraceAbstraction took 6570.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:49:42,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.70 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 368.10 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: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6570.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_6 term size 12 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_6 term size 12: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 14:49:44,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:49:44,260 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:49:44,269 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:49:44,269 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:49:44,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:49:44,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:49:44,272 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:49:44,273 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:49:44,273 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:49:44,274 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:49:44,274 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:49:44,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:49:44,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:49:44,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:49:44,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:49:44,278 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:49:44,279 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:49:44,281 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:49:44,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:49:44,283 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:49:44,284 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:49:44,286 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:49:44,286 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:49:44,287 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:49:44,287 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:49:44,288 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:49:44,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:49:44,289 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:49:44,290 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:49:44,290 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:49:44,290 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:49:44,290 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:49:44,291 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:49:44,291 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:49:44,292 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:49:44,292 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 14:49:44,302 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:49:44,302 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:49:44,303 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:49:44,303 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 14:49:44,303 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:49:44,303 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:49:44,304 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:49:44,304 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:49:44,304 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 14:49:44,305 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:49:44,306 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:49:44,306 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:49:44,307 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 14:49:44,307 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 14:49:44,310 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 -> 9b2ac5a3750101337b54db0fb388c91c5409545e [2018-11-18 14:49:44,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:49:44,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:49:44,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:49:44,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:49:44,356 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:49:44,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:44,400 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/16d9f8a62/6e6a4e72205745c6b468b76a25ea1fe9/FLAG22d5517a5 [2018-11-18 14:49:44,772 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:49:44,772 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:44,780 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/16d9f8a62/6e6a4e72205745c6b468b76a25ea1fe9/FLAG22d5517a5 [2018-11-18 14:49:45,169 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/data/16d9f8a62/6e6a4e72205745c6b468b76a25ea1fe9 [2018-11-18 14:49:45,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:49:45,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:49:45,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:49:45,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:49:45,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:49:45,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6112cc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45, skipping insertion in model container [2018-11-18 14:49:45,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:49:45,210 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:49:45,427 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:49:45,438 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:49:45,475 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:49:45,558 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:49:45,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45 WrapperNode [2018-11-18 14:49:45,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:49:45,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:49:45,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:49:45,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:49:45,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... [2018-11-18 14:49:45,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:49:45,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:49:45,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:49:45,607 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:49:45,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/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 [2018-11-18 14:49:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:49:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:49:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 14:49:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-18 14:49:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:49:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:49:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 14:49:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 14:49:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 14:49:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 14:49:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 14:49:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 14:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 14:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 14:49:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 14:49:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 14:49:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 14:49:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:49:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 14:49:45,999 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:49:46,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:46 BoogieIcfgContainer [2018-11-18 14:49:46,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:49:46,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:49:46,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:49:46,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:49:46,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:49:45" (1/3) ... [2018-11-18 14:49:46,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcacd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:46, skipping insertion in model container [2018-11-18 14:49:46,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:45" (2/3) ... [2018-11-18 14:49:46,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcacd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:46, skipping insertion in model container [2018-11-18 14:49:46,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:46" (3/3) ... [2018-11-18 14:49:46,005 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 14:49:46,011 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:49:46,016 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:49:46,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:49:46,045 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:49:46,045 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:49:46,045 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:49:46,045 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:49:46,045 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:49:46,045 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:49:46,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:49:46,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:49:46,046 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:49:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-11-18 14:49:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 14:49:46,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:46,066 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:46,068 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:46,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1705755525, now seen corresponding path program 1 times [2018-11-18 14:49:46,076 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:46,076 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:46,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:46,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:46,170 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-18 14:49:46,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:46,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:49:46,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:49:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:49:46,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:49:46,187 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2018-11-18 14:49:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:46,205 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2018-11-18 14:49:46,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:49:46,206 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-18 14:49:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:46,212 INFO L225 Difference]: With dead ends: 91 [2018-11-18 14:49:46,212 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 14:49:46,214 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:49:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 14:49:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 14:49:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 14:49:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 14:49:46,239 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-11-18 14:49:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:46,240 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 14:49:46,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:49:46,240 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 14:49:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 14:49:46,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:46,241 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:46,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:46,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:46,241 INFO L82 PathProgramCache]: Analyzing trace with hash -374766804, now seen corresponding path program 1 times [2018-11-18 14:49:46,242 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:46,242 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:46,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:46,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:46,362 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:49:46,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:46,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 14:49:46,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 14:49:46,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:49:46,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:49:46,369 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2018-11-18 14:49:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:46,418 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2018-11-18 14:49:46,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:49:46,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 14:49:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:46,420 INFO L225 Difference]: With dead ends: 68 [2018-11-18 14:49:46,420 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 14:49:46,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:49:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 14:49:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 14:49:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 14:49:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-18 14:49:46,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2018-11-18 14:49:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:46,427 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-18 14:49:46,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 14:49:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-18 14:49:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 14:49:46,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:46,428 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:46,429 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:46,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash 11961176, now seen corresponding path program 1 times [2018-11-18 14:49:46,429 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:46,429 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:46,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:46,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:46,513 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:49:46,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:46,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:49:46,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:49:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:49:46,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:49:46,516 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 3 states. [2018-11-18 14:49:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:46,552 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2018-11-18 14:49:46,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:49:46,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-18 14:49:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:46,553 INFO L225 Difference]: With dead ends: 74 [2018-11-18 14:49:46,553 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 14:49:46,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:49:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 14:49:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-18 14:49:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 14:49:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-11-18 14:49:46,560 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 38 [2018-11-18 14:49:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:46,560 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-11-18 14:49:46,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:49:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-11-18 14:49:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 14:49:46,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:46,561 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:46,561 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:46,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 74000790, now seen corresponding path program 1 times [2018-11-18 14:49:46,562 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:46,562 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:46,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:46,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:46,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:49:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:49:46,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:49:46,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-18 14:49:46,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:49:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:49:46,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-18 14:49:46,836 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2018-11-18 14:49:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:46,941 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2018-11-18 14:49:46,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 14:49:46,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2018-11-18 14:49:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:46,943 INFO L225 Difference]: With dead ends: 74 [2018-11-18 14:49:46,943 INFO L226 Difference]: Without dead ends: 50 [2018-11-18 14:49:46,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:49:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-18 14:49:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-11-18 14:49:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 14:49:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-18 14:49:46,947 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 38 [2018-11-18 14:49:46,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:46,947 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-18 14:49:46,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:49:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-18 14:49:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 14:49:46,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:46,950 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:46,950 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:46,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:46,950 INFO L82 PathProgramCache]: Analyzing trace with hash 32911938, now seen corresponding path program 1 times [2018-11-18 14:49:46,950 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:46,951 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:46,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:47,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:47,135 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:49:47,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:47,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,140 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,146 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,146 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-11-18 14:49:47,177 INFO L477 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 16 treesize of output 12 [2018-11-18 14:49:47,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-11-18 14:49:47,179 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,181 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,182 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,183 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-11-18 14:49:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 14:49:47,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:49:47,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:47,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 14:49:47,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 14:49:47,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 14:49:47,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:49:47,209 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 11 states. [2018-11-18 14:49:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:47,427 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-11-18 14:49:47,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 14:49:47,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2018-11-18 14:49:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:47,429 INFO L225 Difference]: With dead ends: 54 [2018-11-18 14:49:47,429 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 14:49:47,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-18 14:49:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 14:49:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-18 14:49:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 14:49:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-11-18 14:49:47,435 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 44 [2018-11-18 14:49:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:47,435 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-11-18 14:49:47,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 14:49:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-11-18 14:49:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 14:49:47,436 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:47,437 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:47,437 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:47,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash 32913612, now seen corresponding path program 1 times [2018-11-18 14:49:47,438 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:47,438 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:47,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:47,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:47,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:49:47,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:47,558 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,560 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,565 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,565 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-18 14:49:47,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:49:47,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:47,640 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,643 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,657 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:49:47,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:47,659 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,662 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,669 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,669 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2018-11-18 14:49:47,715 INFO L477 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 11 [2018-11-18 14:49:47,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 14:49:47,722 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,724 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,733 INFO L477 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 19 treesize of output 15 [2018-11-18 14:49:47,735 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2018-11-18 14:49:47,735 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,737 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,741 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,741 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:38, output treesize:16 [2018-11-18 14:49:47,762 INFO L477 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 11 [2018-11-18 14:49:47,765 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 14:49:47,765 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,766 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,772 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:47,772 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-11-18 14:49:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 14:49:47,794 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:49:47,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:49:47,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 14:49:47,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 14:49:47,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 14:49:47,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:49:47,797 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 12 states. [2018-11-18 14:49:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:49:48,218 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-11-18 14:49:48,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:49:48,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2018-11-18 14:49:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:49:48,219 INFO L225 Difference]: With dead ends: 51 [2018-11-18 14:49:48,219 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 14:49:48,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-11-18 14:49:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 14:49:48,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 14:49:48,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 14:49:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-18 14:49:48,224 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 44 [2018-11-18 14:49:48,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:49:48,225 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-18 14:49:48,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 14:49:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-18 14:49:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 14:49:48,226 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:49:48,226 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:49:48,226 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:49:48,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:49:48,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1278108350, now seen corresponding path program 1 times [2018-11-18 14:49:48,226 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:49:48,226 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:49:48,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:49:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:49:48,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:49:48,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 14:49:48,388 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:48,391 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:48,391 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 14:49:50,406 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-18 14:49:51,650 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-18 14:49:55,995 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-18 14:49:59,131 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-18 14:49:59,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:59,138 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:49:59,139 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-18 14:49:59,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2018-11-18 14:49:59,144 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:59,151 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:59,162 INFO L267 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. [2018-11-18 14:49:59,163 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:27 [2018-11-18 14:49:59,201 INFO L477 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 11 treesize of output 8 [2018-11-18 14:49:59,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:49:59,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:49:59,209 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:49:59,226 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:49:59,226 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:37 [2018-11-18 14:50:05,549 INFO L477 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 149 treesize of output 147 [2018-11-18 14:50:05,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 145 [2018-11-18 14:50:05,557 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:05,572 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:05,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:05,647 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:164, output treesize:160 [2018-11-18 14:50:11,834 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 37 [2018-11-18 14:50:11,881 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:50:11,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:50:11,898 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:11,921 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:12,031 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:12,031 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:296, output treesize:292 [2018-11-18 14:50:16,269 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-18 14:50:18,542 WARN L180 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2018-11-18 14:50:18,564 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:18,593 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:18,620 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:18,630 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:18,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-11-18 14:50:18,632 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:18,800 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:19,037 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 14:50:19,043 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:19,044 INFO L303 Elim1Store]: Index analysis took 271 ms [2018-11-18 14:50:19,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 167 [2018-11-18 14:50:19,518 WARN L180 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-11-18 14:50:19,527 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 80 [2018-11-18 14:50:19,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 76 [2018-11-18 14:50:19,572 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:19,650 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:19,869 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2018-11-18 14:50:19,887 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:19,888 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 14:50:19,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2018-11-18 14:50:19,890 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:19,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-11-18 14:50:19,951 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:19,990 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:20,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 95 [2018-11-18 14:50:20,245 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2018-11-18 14:50:20,246 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-18 14:50:20,781 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2018-11-18 14:50:20,782 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:21,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 76 [2018-11-18 14:50:21,217 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:21,553 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:21,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 102 [2018-11-18 14:50:21,636 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 14:50:21,638 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 82 [2018-11-18 14:50:21,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 46 [2018-11-18 14:50:21,643 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:21,672 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:21,764 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 14:50:21,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2018-11-18 14:50:21,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-11-18 14:50:21,932 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:21,953 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:22,005 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 14:50:22,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 100 [2018-11-18 14:50:22,076 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 90 [2018-11-18 14:50:22,077 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:22,217 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:22,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:22,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 115 [2018-11-18 14:50:22,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 79 [2018-11-18 14:50:22,298 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:22,407 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:50:22,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 77 [2018-11-18 14:50:22,455 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-11-18 14:50:22,557 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 14:50:22,768 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 14:50:22,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2018-11-18 14:50:22,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 20 [2018-11-18 14:50:22,932 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:22,967 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:22,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2018-11-18 14:50:22,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-11-18 14:50:22,986 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:23,021 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:23,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 68 [2018-11-18 14:50:23,045 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 31 treesize of output 25 [2018-11-18 14:50:23,046 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:23,083 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:50:23,091 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2018-11-18 14:50:23,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-11-18 14:50:23,098 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-18 14:50:23,121 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:50:23,315 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-11-18 14:50:23,546 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 4 xjuncts. [2018-11-18 14:50:23,547 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 5 variables, input treesize:326, output treesize:330 [2018-11-18 14:51:47,937 WARN L180 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-11-18 14:51:47,958 INFO L477 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 113 treesize of output 109 [2018-11-18 14:51:47,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 14:51:47,970 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,000 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 105 treesize of output 101 [2018-11-18 14:51:48,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 14:51:48,133 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,161 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,292 INFO L477 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 88 treesize of output 84 [2018-11-18 14:51:48,295 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 14:51:48,295 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,311 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:51:48,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2018-11-18 14:51:48,443 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 9 variables, input treesize:307, output treesize:274 [2018-11-18 14:52:00,668 WARN L180 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 80 [2018-11-18 14:52:00,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 72 [2018-11-18 14:52:00,728 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2018-11-18 14:52:00,729 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:00,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2018-11-18 14:52:00,889 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,030 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2018-11-18 14:52:01,030 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2018-11-18 14:52:01,153 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-11-18 14:52:01,234 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,277 INFO L267 ElimStorePlain]: Start of recursive call 2: 10 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 51 [2018-11-18 14:52:01,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2018-11-18 14:52:01,366 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,393 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2018-11-18 14:52:01,394 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2018-11-18 14:52:01,413 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,428 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 17 [2018-11-18 14:52:01,429 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2018-11-18 14:52:01,439 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,443 INFO L267 ElimStorePlain]: Start of recursive call 8: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:01,449 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 9 variables, input treesize:277, output treesize:4 [2018-11-18 14:52:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2018-11-18 14:52:03,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:52:06,381 WARN L180 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-11-18 14:52:06,692 WARN L180 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-18 14:52:07,151 WARN L180 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-18 14:52:07,590 WARN L180 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-18 14:52:07,596 INFO L477 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 292 treesize of output 288 [2018-11-18 14:52:07,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 288 treesize of output 284 [2018-11-18 14:52:07,606 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:07,617 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:07,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:07,649 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:299, output treesize:291 [2018-11-18 14:52:09,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:52:09,907 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7eabd24-a5b2-4f99-919a-105850b14c0a/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:52:09,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:52:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:52:09,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:52:09,955 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 14:52:09,955 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:09,957 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:09,957 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-18 14:52:10,046 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:10,047 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:10,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 29 [2018-11-18 14:52:10,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 14:52:10,053 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:10,062 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:10,071 INFO L267 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. [2018-11-18 14:52:10,071 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:24 [2018-11-18 14:52:10,182 INFO L477 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 11 treesize of output 8 [2018-11-18 14:52:10,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:52:10,185 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:10,189 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:10,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:10,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:34 [2018-11-18 14:52:12,396 INFO L477 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 149 treesize of output 147 [2018-11-18 14:52:12,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 145 [2018-11-18 14:52:12,405 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:12,422 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:12,485 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:12,486 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:164, output treesize:160 [2018-11-18 14:52:14,680 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 14:52:14,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 14:52:14,697 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:14,716 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:14,803 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 14:52:14,803 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:296, output treesize:292 [2018-11-18 14:52:16,603 WARN L180 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2018-11-18 14:52:16,624 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:16,658 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:16,672 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:16,717 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:16,717 INFO L303 Elim1Store]: Index analysis took 113 ms [2018-11-18 14:52:16,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 14:52:16,718 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:16,888 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:17,098 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 14:52:17,107 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 14:52:17,107 INFO L303 Elim1Store]: Index analysis took 250 ms [2018-11-18 14:52:17,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 138 [2018-11-18 14:52:17,440 WARN L180 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-11-18 14:52:17,448 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2018-11-18 14:52:17,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2018-11-18 14:52:17,456 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:52:17,497 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:52:17,680 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 94 [2018-11-18 14:52:17,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 90 treesize of output 92 [2018-11-18 14:52:17,892 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:52:17,892 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_15 term size 13 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) 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:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 14:52:17,895 INFO L168 Benchmark]: Toolchain (without parser) took 152722.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 944.4 MB in the beginning and 909.5 MB in the end (delta: 34.9 MB). Peak memory consumption was 226.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:52:17,895 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:52:17,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:52:17,895 INFO L168 Benchmark]: Boogie Preprocessor took 47.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:52:17,895 INFO L168 Benchmark]: RCFGBuilder took 393.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. [2018-11-18 14:52:17,896 INFO L168 Benchmark]: TraceAbstraction took 151893.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 909.5 MB in the end (delta: 147.1 MB). Peak memory consumption was 216.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:52:17,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.59 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 393.46 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: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 151893.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 909.5 MB in the end (delta: 147.1 MB). Peak memory consumption was 216.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_15 term size 13 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_15 term size 13: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...