./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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_24 input size 13 context size 13 output size 13 --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:02:37,568 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:02:37,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:02:37,575 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:02:37,575 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:02:37,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:02:37,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:02:37,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:02:37,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:02:37,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:02:37,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:02:37,580 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:02:37,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:02:37,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:02:37,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:02:37,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:02:37,583 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:02:37,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:02:37,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:02:37,587 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:02:37,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:02:37,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:02:37,590 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:02:37,590 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:02:37,590 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:02:37,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:02:37,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:02:37,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:02:37,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:02:37,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:02:37,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:02:37,594 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:02:37,594 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:02:37,594 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:02:37,595 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:02:37,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:02:37,595 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 22:02:37,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:02:37,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:02:37,606 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:02:37,606 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:02:37,606 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 22:02:37,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:02:37,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:02:37,608 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:02:37,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:02:37,608 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 22:02:37,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:02:37,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:02:37,609 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_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:02:37,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:02:37,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:02:37,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:02:37,641 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:02:37,641 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:02:37,641 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:02:37,676 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/6ef615e3a/c7fe458e03a24593b566145e6a6800d9/FLAG7c925386c [2018-11-22 22:02:38,019 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:02:38,020 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:02:38,028 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/6ef615e3a/c7fe458e03a24593b566145e6a6800d9/FLAG7c925386c [2018-11-22 22:02:38,037 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/6ef615e3a/c7fe458e03a24593b566145e6a6800d9 [2018-11-22 22:02:38,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:02:38,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:02:38,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:02:38,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:02:38,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:02:38,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efb7b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38, skipping insertion in model container [2018-11-22 22:02:38,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:02:38,077 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:02:38,264 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:02:38,272 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:02:38,344 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:02:38,372 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:02:38,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38 WrapperNode [2018-11-22 22:02:38,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:02:38,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:02:38,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:02:38,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:02:38,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:02:38,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:02:38,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:02:38,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:02:38,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... [2018-11-22 22:02:38,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:02:38,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:02:38,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:02:38,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:02:38,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:02:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-22 22:02:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-22 22:02:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 22:02:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 22:02:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-22 22:02:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-22 22:02:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-22 22:02:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:02:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:02:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 22:02:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 22:02:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-22 22:02:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-22 22:02:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-22 22:02:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-22 22:02:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-22 22:02:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:02:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:02:38,791 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:02:38,792 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 22:02:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:02:38 BoogieIcfgContainer [2018-11-22 22:02:38,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:02:38,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:02:38,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:02:38,795 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:02:38,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:02:38" (1/3) ... [2018-11-22 22:02:38,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f63fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:02:38, skipping insertion in model container [2018-11-22 22:02:38,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:02:38" (2/3) ... [2018-11-22 22:02:38,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f63fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:02:38, skipping insertion in model container [2018-11-22 22:02:38,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:02:38" (3/3) ... [2018-11-22 22:02:38,798 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:02:38,807 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:02:38,813 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 22:02:38,826 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 22:02:38,851 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 22:02:38,852 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:02:38,852 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:02:38,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:02:38,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:02:38,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:02:38,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:02:38,853 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:02:38,853 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:02:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-22 22:02:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:02:38,872 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:38,873 INFO L402 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] [2018-11-22 22:02:38,875 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:38,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:38,880 INFO L82 PathProgramCache]: Analyzing trace with hash -8262080, now seen corresponding path program 1 times [2018-11-22 22:02:38,882 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:38,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:38,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:38,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:38,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:02:39,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:02:39,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 22:02:39,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 22:02:39,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 22:02:39,037 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-22 22:02:39,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:02:39,053 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-11-22 22:02:39,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 22:02:39,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-22 22:02:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:02:39,059 INFO L225 Difference]: With dead ends: 86 [2018-11-22 22:02:39,060 INFO L226 Difference]: Without dead ends: 36 [2018-11-22 22:02:39,062 INFO L631 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 [2018-11-22 22:02:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-22 22:02:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-22 22:02:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-22 22:02:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-22 22:02:39,087 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-11-22 22:02:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:02:39,088 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-22 22:02:39,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 22:02:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-22 22:02:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:02:39,089 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:39,089 INFO L402 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] [2018-11-22 22:02:39,089 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:39,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -8270729, now seen corresponding path program 1 times [2018-11-22 22:02:39,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:39,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:39,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:02:39,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-22 22:02:39,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-22 22:02:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-22 22:02:39,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-22 22:02:39,239 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2018-11-22 22:02:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:02:39,349 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-11-22 22:02:39,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-22 22:02:39,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-11-22 22:02:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:02:39,351 INFO L225 Difference]: With dead ends: 43 [2018-11-22 22:02:39,351 INFO L226 Difference]: Without dead ends: 40 [2018-11-22 22:02:39,352 INFO L631 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 [2018-11-22 22:02:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-22 22:02:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-22 22:02:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-22 22:02:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-11-22 22:02:39,358 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-11-22 22:02:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:02:39,358 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-11-22 22:02:39,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-22 22:02:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-11-22 22:02:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:02:39,359 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:39,359 INFO L402 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] [2018-11-22 22:02:39,360 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:39,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:39,360 INFO L82 PathProgramCache]: Analyzing trace with hash -8269055, now seen corresponding path program 1 times [2018-11-22 22:02:39,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:39,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:39,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:02:39,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:02:39,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:02:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:02:39,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:02:39,423 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-11-22 22:02:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:02:39,443 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-11-22 22:02:39,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:02:39,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-22 22:02:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:02:39,445 INFO L225 Difference]: With dead ends: 66 [2018-11-22 22:02:39,445 INFO L226 Difference]: Without dead ends: 42 [2018-11-22 22:02:39,445 INFO L631 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 [2018-11-22 22:02:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-22 22:02:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-22 22:02:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-22 22:02:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-22 22:02:39,448 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-11-22 22:02:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:02:39,449 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-22 22:02:39,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:02:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-22 22:02:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-22 22:02:39,449 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:39,450 INFO L402 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, 1, 1, 1] [2018-11-22 22:02:39,450 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:39,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash 8420605, now seen corresponding path program 1 times [2018-11-22 22:02:39,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:39,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:39,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:02:39,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:02:39,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:02:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:02:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:02:39,481 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2018-11-22 22:02:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:02:39,500 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2018-11-22 22:02:39,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:02:39,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-22 22:02:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:02:39,501 INFO L225 Difference]: With dead ends: 71 [2018-11-22 22:02:39,501 INFO L226 Difference]: Without dead ends: 42 [2018-11-22 22:02:39,502 INFO L631 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 [2018-11-22 22:02:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-22 22:02:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-22 22:02:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-22 22:02:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-22 22:02:39,506 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 35 [2018-11-22 22:02:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:02:39,506 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-22 22:02:39,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:02:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-22 22:02:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-22 22:02:39,506 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:39,506 INFO L402 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, 1, 1, 1] [2018-11-22 22:02:39,506 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:39,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:39,507 INFO L82 PathProgramCache]: Analyzing trace with hash -125592901, now seen corresponding path program 1 times [2018-11-22 22:02:39,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:39,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:39,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:02:39,615 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:02:39,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:39,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:02:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:39,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:02:39,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-22 22:02:39,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 22:02:39,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 22:02:39,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:02:39,710 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2018-11-22 22:02:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:02:39,749 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-11-22 22:02:39,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 22:02:39,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-11-22 22:02:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:02:39,750 INFO L225 Difference]: With dead ends: 71 [2018-11-22 22:02:39,750 INFO L226 Difference]: Without dead ends: 47 [2018-11-22 22:02:39,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-22 22:02:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-22 22:02:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-11-22 22:02:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-22 22:02:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-11-22 22:02:39,756 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 35 [2018-11-22 22:02:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:02:39,756 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-11-22 22:02:39,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 22:02:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-11-22 22:02:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-22 22:02:39,758 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:02:39,758 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 22:02:39,758 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:02:39,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:02:39,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1374189955, now seen corresponding path program 1 times [2018-11-22 22:02:39,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:02:39,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:02:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:02:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:40,571 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-11-22 22:02:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:02:40,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:02:40,747 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:02:40,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:02:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:02:40,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:02:40,820 INFO L478 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 [2018-11-22 22:02:40,822 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:02:40,839 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:02:40,839 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-22 22:02:55,652 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:02:55,654 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:02:55,655 INFO L478 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 [2018-11-22 22:02:55,659 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2018-11-22 22:02:55,659 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:02:55,665 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:02:55,671 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. [2018-11-22 22:02:55,671 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:26 [2018-11-22 22:02:56,941 INFO L478 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 [2018-11-22 22:02:56,943 INFO L478 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 [2018-11-22 22:02:56,943 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:02:56,945 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:02:56,950 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:02:56,951 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-22 22:03:00,543 INFO L478 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 27 treesize of output 22 [2018-11-22 22:03:00,547 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:03:00,557 INFO L478 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 22 treesize of output 14 [2018-11-22 22:03:00,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:00,561 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:00,573 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:03:00,576 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:03:00,586 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:03:00,586 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:79, output treesize:62 [2018-11-22 22:03:03,792 WARN L180 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-22 22:03:03,797 INFO L478 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 150 treesize of output 146 [2018-11-22 22:03:03,800 INFO L478 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 146 treesize of output 142 [2018-11-22 22:03:03,800 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:03:03,803 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:03:03,831 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 203 [2018-11-22 22:03:03,835 INFO L478 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 151 treesize of output 53 [2018-11-22 22:03:03,835 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:03,861 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 99 [2018-11-22 22:03:03,861 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-22 22:03:03,868 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:03:03,882 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 22:03:03,883 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:172, output treesize:82 [2018-11-22 22:03:06,362 INFO L478 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 50 treesize of output 47 [2018-11-22 22:03:06,364 INFO L478 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 [2018-11-22 22:03:06,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,371 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,378 INFO L478 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 85 treesize of output 82 [2018-11-22 22:03:06,380 INFO L478 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 [2018-11-22 22:03:06,380 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,430 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,462 INFO L478 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 81 treesize of output 78 [2018-11-22 22:03:06,464 INFO L478 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 [2018-11-22 22:03:06,465 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,474 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,476 INFO L478 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 46 treesize of output 43 [2018-11-22 22:03:06,478 INFO L478 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 [2018-11-22 22:03:06,478 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,483 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,516 INFO L478 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 77 treesize of output 74 [2018-11-22 22:03:06,520 INFO L478 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 12 treesize of output 1 [2018-11-22 22:03:06,520 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,528 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,566 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 66 [2018-11-22 22:03:06,569 INFO L478 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 51 treesize of output 39 [2018-11-22 22:03:06,570 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:06,611 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 38 [2018-11-22 22:03:06,611 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-22 22:03:06,628 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:03:06,662 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-22 22:03:06,662 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-22 22:03:08,853 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:03:08,854 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:03:08,855 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:03:08,858 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:03:08,859 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2018-11-22 22:03:08,860 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,869 INFO L478 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 12 treesize of output 10 [2018-11-22 22:03:08,871 INFO L478 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 10 treesize of output 8 [2018-11-22 22:03:08,871 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,872 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,878 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,878 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:166, output treesize:33 [2018-11-22 22:03:08,912 INFO L478 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 27 treesize of output 21 [2018-11-22 22:03:08,914 INFO L478 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 21 treesize of output 12 [2018-11-22 22:03:08,915 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,918 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,923 INFO L478 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 15 treesize of output 11 [2018-11-22 22:03:08,924 INFO L478 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 [2018-11-22 22:03:08,925 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,926 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,929 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,929 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:44, output treesize:14 [2018-11-22 22:03:08,957 INFO L478 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 [2018-11-22 22:03:08,958 INFO L478 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 [2018-11-22 22:03:08,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,959 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,961 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:03:08,961 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2018-11-22 22:03:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:03:08,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:03:08,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 38 [2018-11-22 22:03:08,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-22 22:03:08,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-22 22:03:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1250, Unknown=53, NotChecked=0, Total=1406 [2018-11-22 22:03:08,997 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 38 states. [2018-11-22 22:03:18,769 WARN L180 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2018-11-22 22:03:22,963 WARN L180 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2018-11-22 22:03:37,806 WARN L180 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2018-11-22 22:03:44,491 WARN L180 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-22 22:03:55,340 WARN L180 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-22 22:04:01,501 WARN L180 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-22 22:04:09,199 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 45 [2018-11-22 22:04:18,080 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 22:04:30,063 WARN L180 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 77 [2018-11-22 22:04:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:33,748 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-11-22 22:04:33,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-22 22:04:33,748 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 40 [2018-11-22 22:04:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:33,750 INFO L225 Difference]: With dead ends: 64 [2018-11-22 22:04:33,750 INFO L226 Difference]: Without dead ends: 62 [2018-11-22 22:04:33,750 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=214, Invalid=2466, Unknown=76, NotChecked=0, Total=2756 [2018-11-22 22:04:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-22 22:04:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-11-22 22:04:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-22 22:04:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-22 22:04:33,758 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 40 [2018-11-22 22:04:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:33,759 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-22 22:04:33,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-22 22:04:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-22 22:04:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-22 22:04:33,760 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:33,760 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-11-22 22:04:33,761 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:33,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:33,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1613207483, now seen corresponding path program 2 times [2018-11-22 22:04:33,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:04:33,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:04:33,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:04:33,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:33,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:04:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:33,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:04:33,811 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:04:33,827 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 22:04:33,899 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 22:04:33,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 22:04:33,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:33,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:04:33,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-22 22:04:33,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 22:04:33,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 22:04:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-22 22:04:33,929 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 7 states. [2018-11-22 22:04:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:33,966 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-11-22 22:04:33,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 22:04:33,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-11-22 22:04:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:33,968 INFO L225 Difference]: With dead ends: 73 [2018-11-22 22:04:33,968 INFO L226 Difference]: Without dead ends: 44 [2018-11-22 22:04:33,968 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:04:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-22 22:04:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-22 22:04:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-22 22:04:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-22 22:04:33,973 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 45 [2018-11-22 22:04:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:33,974 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-22 22:04:33,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 22:04:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-22 22:04:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-22 22:04:33,974 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:33,974 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 22:04:33,975 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:33,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:33,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2041629940, now seen corresponding path program 1 times [2018-11-22 22:04:33,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:04:33,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:04:33,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:04:33,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:04:33,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:04:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:34,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:04:34,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:04:34,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:34,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:34,588 INFO L478 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 [2018-11-22 22:04:34,589 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:34,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:34,593 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-22 22:04:37,020 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:37,021 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:37,022 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:37,022 INFO L478 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 [2018-11-22 22:04:37,025 INFO L478 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 [2018-11-22 22:04:37,025 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:37,032 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:37,051 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. [2018-11-22 22:04:37,051 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:35 [2018-11-22 22:04:37,271 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:37,274 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:37,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:37,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:55 [2018-11-22 22:04:37,817 WARN L180 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-22 22:04:37,820 INFO L478 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 173 treesize of output 171 [2018-11-22 22:04:37,823 INFO L478 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 171 treesize of output 169 [2018-11-22 22:04:37,824 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:37,827 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:37,840 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. [2018-11-22 22:04:37,841 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:188, output treesize:184 [2018-11-22 22:04:40,360 WARN L180 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-22 22:04:40,369 INFO L478 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 [2018-11-22 22:04:40,372 INFO L478 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 [2018-11-22 22:04:40,373 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,390 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:40,390 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-11-22 22:04:40,592 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 58 [2018-11-22 22:04:40,596 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,597 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,598 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,599 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,600 INFO L478 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 [2018-11-22 22:04:40,600 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,629 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,631 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,652 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,653 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:40,653 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:04:40,654 INFO L478 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 192 treesize of output 212 [2018-11-22 22:04:40,696 INFO L478 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 92 treesize of output 82 [2018-11-22 22:04:40,698 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2018-11-22 22:04:40,703 INFO L478 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 72 treesize of output 71 [2018-11-22 22:04:40,704 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,715 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,725 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:40,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 98 [2018-11-22 22:04:40,750 INFO L478 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 77 treesize of output 63 [2018-11-22 22:04:40,750 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:40,763 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-11-22 22:04:40,966 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:04:40,967 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_8 input size 12 context size 12 output 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:456) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-11-22 22:04:40,970 INFO L168 Benchmark]: Toolchain (without parser) took 122929.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 957.6 MB in the beginning and 981.5 MB in the end (delta: -23.8 MB). Peak memory consumption was 105.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:04:40,970 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:04:40,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-22 22:04:40,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:04:40,971 INFO L168 Benchmark]: Boogie Preprocessor took 22.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:04:40,971 INFO L168 Benchmark]: RCFGBuilder took 370.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2018-11-22 22:04:40,971 INFO L168 Benchmark]: TraceAbstraction took 122176.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 9.4 MB). Free memory was 1.1 GB in the beginning and 981.5 MB in the end (delta: 88.8 MB). Peak memory consumption was 98.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:04:40,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 370.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 122176.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 9.4 MB). Free memory was 1.1 GB in the beginning and 981.5 MB in the end (delta: 88.8 MB). Peak memory consumption was 98.3 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_8 input size 12 context size 12 output size 12 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_8 input size 12 context size 12 output 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-aa41828 [2018-11-22 22:04:42,312 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:04:42,313 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:04:42,322 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:04:42,323 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:04:42,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:04:42,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:04:42,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:04:42,326 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:04:42,327 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:04:42,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:04:42,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:04:42,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:04:42,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:04:42,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:04:42,330 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:04:42,331 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:04:42,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:04:42,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:04:42,335 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:04:42,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:04:42,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:04:42,338 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:04:42,339 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:04:42,339 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:04:42,339 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:04:42,340 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:04:42,340 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:04:42,341 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:04:42,341 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:04:42,341 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:04:42,342 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:04:42,342 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:04:42,342 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:04:42,343 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:04:42,343 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:04:42,344 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-22 22:04:42,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:04:42,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:04:42,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:04:42,356 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:04:42,357 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 22:04:42,357 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 22:04:42,357 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 22:04:42,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:04:42,358 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:04:42,359 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:04:42,359 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:04:42,360 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:04:42,360 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:04:42,360 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:04:42,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:04:42,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:04:42,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:04:42,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:04:42,362 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-22 22:04:42,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:04:42,363 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-22 22:04:42,363 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-22 22:04:42,363 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_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:42,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:04:42,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:04:42,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:04:42,406 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:04:42,406 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:04:42,407 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:04:42,450 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/85f407655/69eeb0da051b4fb2a25e6620ab688704/FLAG5648f66a2 [2018-11-22 22:04:42,811 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:04:42,812 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:04:42,820 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/85f407655/69eeb0da051b4fb2a25e6620ab688704/FLAG5648f66a2 [2018-11-22 22:04:43,211 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/data/85f407655/69eeb0da051b4fb2a25e6620ab688704 [2018-11-22 22:04:43,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:04:43,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:04:43,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:04:43,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:04:43,218 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:04:43,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62325a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43, skipping insertion in model container [2018-11-22 22:04:43,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:04:43,255 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:04:43,479 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:04:43,489 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:04:43,531 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:04:43,614 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:04:43,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43 WrapperNode [2018-11-22 22:04:43,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:04:43,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:04:43,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:04:43,616 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:04:43,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:04:43,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:04:43,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:04:43,636 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:04:43,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... [2018-11-22 22:04:43,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:04:43,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:04:43,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:04:43,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:04:43,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-22 22:04:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-22 22:04:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 22:04:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-22 22:04:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-22 22:04:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:04:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:04:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 22:04:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-22 22:04:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-22 22:04:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-22 22:04:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-22 22:04:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-22 22:04:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-22 22:04:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:04:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:04:44,183 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:04:44,183 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 22:04:44,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:04:44 BoogieIcfgContainer [2018-11-22 22:04:44,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:04:44,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:04:44,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:04:44,186 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:04:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:04:43" (1/3) ... [2018-11-22 22:04:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41602fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:04:44, skipping insertion in model container [2018-11-22 22:04:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:43" (2/3) ... [2018-11-22 22:04:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41602fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:04:44, skipping insertion in model container [2018-11-22 22:04:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:04:44" (3/3) ... [2018-11-22 22:04:44,189 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-22 22:04:44,198 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:04:44,204 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 22:04:44,215 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 22:04:44,234 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 22:04:44,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:04:44,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:04:44,235 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:04:44,235 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:04:44,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:04:44,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:04:44,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:04:44,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:04:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-22 22:04:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:04:44,250 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:44,251 INFO L402 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] [2018-11-22 22:04:44,252 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:44,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash -8262080, now seen corresponding path program 1 times [2018-11-22 22:04:44,259 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:44,260 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:44,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:44,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:44,350 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 22:04:44,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:04:44,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:04:44,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 22:04:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 22:04:44,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 22:04:44,371 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-22 22:04:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:44,393 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-11-22 22:04:44,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 22:04:44,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-22 22:04:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:44,399 INFO L225 Difference]: With dead ends: 86 [2018-11-22 22:04:44,400 INFO L226 Difference]: Without dead ends: 36 [2018-11-22 22:04:44,402 INFO L631 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 [2018-11-22 22:04:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-22 22:04:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-22 22:04:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-22 22:04:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-22 22:04:44,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-11-22 22:04:44,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:44,431 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-22 22:04:44,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 22:04:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-22 22:04:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:04:44,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:44,432 INFO L402 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] [2018-11-22 22:04:44,432 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:44,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:44,433 INFO L82 PathProgramCache]: Analyzing trace with hash -8270729, now seen corresponding path program 1 times [2018-11-22 22:04:44,433 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:44,433 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:44,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:44,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:44,566 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 22:04:44,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:04:44,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:04:44,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:04:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:04:44,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:04:44,570 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-11-22 22:04:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:44,610 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-11-22 22:04:44,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:04:44,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-22 22:04:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:44,611 INFO L225 Difference]: With dead ends: 64 [2018-11-22 22:04:44,612 INFO L226 Difference]: Without dead ends: 41 [2018-11-22 22:04:44,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:04:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-22 22:04:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-22 22:04:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-22 22:04:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-11-22 22:04:44,617 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-11-22 22:04:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:44,617 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-11-22 22:04:44,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:04:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-11-22 22:04:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-22 22:04:44,618 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:44,618 INFO L402 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, 1, 1, 1] [2018-11-22 22:04:44,618 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:44,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 8418931, now seen corresponding path program 1 times [2018-11-22 22:04:44,619 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:44,619 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:44,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:44,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:44,715 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 22:04:44,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:04:44,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:04:44,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:04:44,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:04:44,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:04:44,718 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 3 states. [2018-11-22 22:04:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:44,922 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2018-11-22 22:04:44,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:04:44,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-22 22:04:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:44,923 INFO L225 Difference]: With dead ends: 69 [2018-11-22 22:04:44,923 INFO L226 Difference]: Without dead ends: 41 [2018-11-22 22:04:44,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:04:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-22 22:04:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-11-22 22:04:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-22 22:04:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-22 22:04:44,928 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2018-11-22 22:04:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:44,928 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-22 22:04:44,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:04:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-22 22:04:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-22 22:04:44,929 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:44,929 INFO L402 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, 1, 1, 1] [2018-11-22 22:04:44,929 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:44,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:44,930 INFO L82 PathProgramCache]: Analyzing trace with hash -125594575, now seen corresponding path program 1 times [2018-11-22 22:04:44,930 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:44,930 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:44,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:44,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:45,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:04:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:04:45,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:04:45,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-22 22:04:45,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-22 22:04:45,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-22 22:04:45,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-22 22:04:45,207 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2018-11-22 22:04:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:45,324 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2018-11-22 22:04:45,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 22:04:45,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-11-22 22:04:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:45,326 INFO L225 Difference]: With dead ends: 69 [2018-11-22 22:04:45,326 INFO L226 Difference]: Without dead ends: 46 [2018-11-22 22:04:45,327 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-22 22:04:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-22 22:04:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-11-22 22:04:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-22 22:04:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-11-22 22:04:45,332 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2018-11-22 22:04:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:45,332 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-11-22 22:04:45,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-22 22:04:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-11-22 22:04:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-22 22:04:45,333 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:45,333 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 22:04:45,334 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:45,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1374188281, now seen corresponding path program 1 times [2018-11-22 22:04:45,334 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:45,334 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:45,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:45,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:45,497 INFO L478 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 [2018-11-22 22:04:45,499 INFO L478 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 [2018-11-22 22:04:45,500 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,502 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,508 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,508 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-11-22 22:04:45,544 INFO L478 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 [2018-11-22 22:04:45,548 INFO L478 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 [2018-11-22 22:04:45,548 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,549 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,552 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:45,553 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-11-22 22:04:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-22 22:04:45,572 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 22:04:45,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:04:45,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-22 22:04:45,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-22 22:04:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-22 22:04:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-22 22:04:45,575 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 11 states. [2018-11-22 22:04:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:04:45,893 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-22 22:04:45,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-22 22:04:45,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2018-11-22 22:04:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:04:45,895 INFO L225 Difference]: With dead ends: 49 [2018-11-22 22:04:45,895 INFO L226 Difference]: Without dead ends: 46 [2018-11-22 22:04:45,895 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-22 22:04:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-22 22:04:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-22 22:04:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-22 22:04:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-11-22 22:04:45,901 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 40 [2018-11-22 22:04:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:04:45,901 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-11-22 22:04:45,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-22 22:04:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-11-22 22:04:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-22 22:04:45,902 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:04:45,902 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 22:04:45,902 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:04:45,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:04:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1374189955, now seen corresponding path program 1 times [2018-11-22 22:04:45,903 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:04:45,903 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/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 [2018-11-22 22:04:45,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:04:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:04:46,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:04:46,061 INFO L478 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 [2018-11-22 22:04:46,061 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:46,068 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:46,069 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-22 22:04:47,169 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 [2018-11-22 22:04:49,179 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) c_dll_create_~new_head~0.base (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-22 22:04:51,188 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) c_dll_create_~head~0.base (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-22 22:04:53,193 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) |c_dll_create_#res.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-22 22:04:53,202 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:53,204 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:53,205 INFO L478 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 [2018-11-22 22:04:53,212 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-22 22:04:53,213 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,220 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,231 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. [2018-11-22 22:04:53,232 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:28 [2018-11-22 22:04:53,355 INFO L478 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 [2018-11-22 22:04:53,361 INFO L478 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 [2018-11-22 22:04:53,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,366 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,389 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,389 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-22 22:04:53,547 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:53,574 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:53,688 INFO L478 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 27 treesize of output 22 [2018-11-22 22:04:53,700 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:53,710 INFO L478 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 22 treesize of output 14 [2018-11-22 22:04:53,710 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,723 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:53,766 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:53,766 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:83, output treesize:70 [2018-11-22 22:04:55,882 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-22 22:04:55,895 INFO L478 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 174 treesize of output 170 [2018-11-22 22:04:55,903 INFO L478 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 170 treesize of output 166 [2018-11-22 22:04:55,904 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:55,918 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:04:56,070 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 235 [2018-11-22 22:04:56,193 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 115 [2018-11-22 22:04:56,194 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-22 22:04:56,294 INFO L478 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 122 treesize of output 7 [2018-11-22 22:04:56,294 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:56,338 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:04:56,403 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 22:04:56,403 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:196, output treesize:90 [2018-11-22 22:04:56,602 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 62 [2018-11-22 22:04:56,607 INFO L478 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 51 treesize of output 39 [2018-11-22 22:04:56,608 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:56,730 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 42 [2018-11-22 22:04:56,731 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-22 22:04:56,791 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:04:57,020 INFO L478 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 35 treesize of output 32 [2018-11-22 22:04:57,024 INFO L478 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 [2018-11-22 22:04:57,024 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,035 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,053 INFO L478 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 85 treesize of output 82 [2018-11-22 22:04:57,059 INFO L478 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 [2018-11-22 22:04:57,059 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,144 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,149 INFO L478 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 34 treesize of output 31 [2018-11-22 22:04:57,153 INFO L478 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 [2018-11-22 22:04:57,153 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,164 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,389 INFO L478 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 31 treesize of output 28 [2018-11-22 22:04:57,392 INFO L478 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 [2018-11-22 22:04:57,392 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,400 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,404 INFO L478 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 30 treesize of output 27 [2018-11-22 22:04:57,406 INFO L478 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 [2018-11-22 22:04:57,406 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,420 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,441 INFO L478 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 81 treesize of output 78 [2018-11-22 22:04:57,448 INFO L478 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 [2018-11-22 22:04:57,448 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,496 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,637 INFO L478 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 77 treesize of output 74 [2018-11-22 22:04:57,642 INFO L478 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 12 treesize of output 1 [2018-11-22 22:04:57,642 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,663 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:57,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-22 22:04:57,753 INFO L202 ElimStorePlain]: Needed 18 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-22 22:04:57,980 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:57,982 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:57,983 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:57,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:04:57,987 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2018-11-22 22:04:57,988 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,005 INFO L478 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 12 treesize of output 10 [2018-11-22 22:04:58,008 INFO L478 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 10 treesize of output 8 [2018-11-22 22:04:58,008 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,010 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,024 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:174, output treesize:35 [2018-11-22 22:04:58,074 INFO L478 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 [2018-11-22 22:04:58,077 INFO L478 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 [2018-11-22 22:04:58,078 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,080 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,092 INFO L478 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 27 treesize of output 21 [2018-11-22 22:04:58,094 INFO L478 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 21 treesize of output 12 [2018-11-22 22:04:58,094 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,098 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,104 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,104 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:16 [2018-11-22 22:04:58,147 INFO L478 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 [2018-11-22 22:04:58,149 INFO L478 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 [2018-11-22 22:04:58,149 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,150 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,153 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:04:58,153 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-11-22 22:04:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2018-11-22 22:04:58,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:04:58,587 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-22 22:04:58,721 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-22 22:05:02,298 WARN L180 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-22 22:05:03,050 WARN L180 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-11-22 22:05:04,449 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 90 [2018-11-22 22:05:05,889 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 86 [2018-11-22 22:05:06,047 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-22 22:05:06,049 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:06,078 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:06,216 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:06,233 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:06,379 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 73 [2018-11-22 22:05:06,392 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2018-11-22 22:05:06,421 INFO L478 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 16 treesize of output 17 [2018-11-22 22:05:06,422 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:06,470 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:06,648 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 75 [2018-11-22 22:05:06,660 INFO L478 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 59 treesize of output 58 [2018-11-22 22:05:06,661 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:07,443 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 89 [2018-11-22 22:05:07,444 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-11-22 22:05:08,800 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:08,801 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:08,802 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 71 [2018-11-22 22:05:08,808 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:08,811 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:08,829 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 55 [2018-11-22 22:05:08,830 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:08,867 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:08,880 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:08,881 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:08,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 67 [2018-11-22 22:05:08,891 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:08,907 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:08,993 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 86 [2018-11-22 22:05:08,994 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 3 xjuncts. [2018-11-22 22:05:09,185 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:05:09,265 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 81 [2018-11-22 22:05:09,272 INFO L478 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 69 treesize of output 56 [2018-11-22 22:05:09,273 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:09,449 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:09,522 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 74 [2018-11-22 22:05:09,523 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 4 xjuncts. [2018-11-22 22:05:09,700 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-22 22:05:10,613 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:10,659 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:10,716 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 83 [2018-11-22 22:05:10,724 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:10,736 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:10,828 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 114 [2018-11-22 22:05:10,829 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 4 xjuncts. [2018-11-22 22:05:11,271 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:11,282 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:11,307 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:11,333 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 86 [2018-11-22 22:05:11,334 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 3 xjuncts. [2018-11-22 22:05:11,794 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-22 22:05:12,890 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:12,931 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:12,988 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 82 [2018-11-22 22:05:12,999 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:13,002 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:13,029 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-22 22:05:13,030 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:13,240 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:13,262 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:13,296 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:13,324 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 86 [2018-11-22 22:05:13,325 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 3 xjuncts. [2018-11-22 22:05:13,839 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-22 22:05:14,307 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-11-22 22:05:14,535 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-11-22 22:05:14,811 INFO L478 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 45 treesize of output 41 [2018-11-22 22:05:14,817 INFO L478 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 17 treesize of output 4 [2018-11-22 22:05:14,817 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,848 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,854 INFO L478 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 49 treesize of output 45 [2018-11-22 22:05:14,860 INFO L478 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 25 treesize of output 12 [2018-11-22 22:05:14,860 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,891 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,898 INFO L478 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 35 treesize of output 33 [2018-11-22 22:05:14,904 INFO L478 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 16 treesize of output 14 [2018-11-22 22:05:14,904 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:14,937 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:14,942 INFO L478 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 45 treesize of output 41 [2018-11-22 22:05:14,946 INFO L478 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 21 treesize of output 8 [2018-11-22 22:05:14,946 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,975 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:14,980 INFO L478 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 49 treesize of output 45 [2018-11-22 22:05:14,987 INFO L478 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 25 treesize of output 12 [2018-11-22 22:05:14,988 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,020 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,233 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,254 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,255 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,267 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,268 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,290 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,291 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,315 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,316 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,345 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:15,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 40 [2018-11-22 22:05:15,762 INFO L478 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 18 treesize of output 3 [2018-11-22 22:05:15,762 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,776 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,782 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:15,783 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-22 22:05:15,787 INFO L478 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 3 [2018-11-22 22:05:15,787 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,820 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,824 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:15,824 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-22 22:05:15,831 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-11-22 22:05:15,831 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,843 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,868 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2018-11-22 22:05:15,877 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2018-11-22 22:05:15,878 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:15,967 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2018-11-22 22:05:15,968 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 4 xjuncts. [2018-11-22 22:05:16,037 INFO L478 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 38 treesize of output 30 [2018-11-22 22:05:16,037 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:16,092 INFO L267 ElimStorePlain]: Start of recursive call 51: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-22 22:05:16,095 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 60 [2018-11-22 22:05:16,099 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-11-22 22:05:16,099 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:16,111 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:16,527 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-2 vars, End of recursive call: 7 dim-0 vars, and 5 xjuncts. [2018-11-22 22:05:16,528 INFO L202 ElimStorePlain]: Needed 56 recursive calls to eliminate 7 variables, input treesize:147, output treesize:178 [2018-11-22 22:05:16,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:05:16,730 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:05:16,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:05:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:05:16,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:05:16,791 INFO L478 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 [2018-11-22 22:05:16,791 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:16,793 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:16,793 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-22 22:05:27,661 WARN L180 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-22 22:05:34,299 WARN L180 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-22 22:05:42,308 WARN L180 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-22 22:05:42,323 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:42,324 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:42,325 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:42,325 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 40 [2018-11-22 22:05:42,328 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2018-11-22 22:05:42,328 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,337 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,346 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. [2018-11-22 22:05:42,346 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:29 [2018-11-22 22:05:42,525 INFO L478 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 [2018-11-22 22:05:42,530 INFO L478 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 [2018-11-22 22:05:42,530 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,540 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,565 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,565 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-22 22:05:42,625 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:42,637 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:42,762 INFO L478 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 27 treesize of output 22 [2018-11-22 22:05:42,771 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:42,777 INFO L478 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 22 treesize of output 14 [2018-11-22 22:05:42,777 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,796 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:42,853 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:42,853 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:79, output treesize:62 [2018-11-22 22:05:42,960 INFO L478 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 174 treesize of output 170 [2018-11-22 22:05:42,966 INFO L478 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 170 treesize of output 166 [2018-11-22 22:05:42,966 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:42,976 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:43,109 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 235 [2018-11-22 22:05:43,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 115 [2018-11-22 22:05:43,176 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-22 22:05:43,260 INFO L478 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 122 treesize of output 7 [2018-11-22 22:05:43,261 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,296 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:05:43,363 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 22:05:43,364 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:196, output treesize:90 [2018-11-22 22:05:43,380 INFO L478 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 50 treesize of output 47 [2018-11-22 22:05:43,384 INFO L478 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 [2018-11-22 22:05:43,384 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,410 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,432 INFO L478 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 85 treesize of output 82 [2018-11-22 22:05:43,439 INFO L478 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 [2018-11-22 22:05:43,439 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,488 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,640 INFO L478 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 81 treesize of output 78 [2018-11-22 22:05:43,645 INFO L478 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 12 treesize of output 1 [2018-11-22 22:05:43,645 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,689 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,794 INFO L478 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 66 treesize of output 63 [2018-11-22 22:05:43,798 INFO L478 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 [2018-11-22 22:05:43,798 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,820 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,826 INFO L478 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 46 treesize of output 43 [2018-11-22 22:05:43,829 INFO L478 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 [2018-11-22 22:05:43,829 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,844 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:43,946 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 66 [2018-11-22 22:05:43,957 INFO L478 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 51 treesize of output 39 [2018-11-22 22:05:43,957 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:44,029 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 38 [2018-11-22 22:05:44,030 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-22 22:05:44,060 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:05:44,140 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-22 22:05:44,140 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-22 22:05:44,206 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:44,207 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:44,208 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:44,209 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:44,209 INFO L478 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 32 treesize of output 49 [2018-11-22 22:05:44,210 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:44,233 INFO L478 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 29 treesize of output 23 [2018-11-22 22:05:44,239 INFO L478 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 23 treesize of output 17 [2018-11-22 22:05:44,240 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:44,241 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:44,252 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:44,253 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:192, output treesize:27 [2018-11-22 22:05:47,034 INFO L478 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 [2018-11-22 22:05:47,036 INFO L478 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 [2018-11-22 22:05:47,037 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,039 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,049 INFO L478 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 27 treesize of output 21 [2018-11-22 22:05:47,051 INFO L478 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 21 treesize of output 12 [2018-11-22 22:05:47,051 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,056 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,061 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,061 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-22 22:05:47,123 INFO L478 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 [2018-11-22 22:05:47,124 INFO L478 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 [2018-11-22 22:05:47,124 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,126 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,127 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:47,127 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-22 22:05:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-22 22:05:47,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:05:47,408 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-22 22:05:47,514 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-22 22:05:53,031 WARN L180 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-22 22:05:54,144 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 77 [2018-11-22 22:05:55,704 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 91 [2018-11-22 22:05:57,275 WARN L180 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 87 [2018-11-22 22:05:57,468 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-22 22:05:57,477 INFO L478 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 40 treesize of output 36 [2018-11-22 22:05:57,485 INFO L478 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 36 treesize of output 32 [2018-11-22 22:05:57,486 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:57,512 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:57,729 INFO L478 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 19 treesize of output 16 [2018-11-22 22:05:57,740 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2018-11-22 22:05:57,761 INFO L478 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 20 treesize of output 8 [2018-11-22 22:05:57,762 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:57,776 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:57,789 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:05:57,907 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:57,923 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:58,005 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:58,016 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:05:58,153 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 64 [2018-11-22 22:05:58,336 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-11-22 22:05:58,345 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:58,345 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:58,346 INFO L478 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 40 treesize of output 42 [2018-11-22 22:05:58,346 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:58,359 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:58,359 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:58,360 INFO L478 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 40 treesize of output 42 [2018-11-22 22:05:58,360 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:58,395 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 53 [2018-11-22 22:05:58,395 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-22 22:05:58,403 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:05:58,404 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:05:58,404 INFO L478 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 40 treesize of output 42 [2018-11-22 22:05:58,405 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:58,764 INFO L478 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 42 treesize of output 41 [2018-11-22 22:05:58,764 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:59,197 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2018-11-22 22:05:59,201 INFO L478 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 25 treesize of output 19 [2018-11-22 22:05:59,202 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:59,307 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2018-11-22 22:05:59,307 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-11-22 22:05:59,413 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-22 22:05:59,960 INFO L478 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 35 treesize of output 29 [2018-11-22 22:05:59,966 INFO L478 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 8 treesize of output 1 [2018-11-22 22:05:59,966 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 22:05:59,994 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,000 INFO L478 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 35 treesize of output 29 [2018-11-22 22:06:00,006 INFO L478 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 8 treesize of output 1 [2018-11-22 22:06:00,007 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,036 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,041 INFO L478 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 35 treesize of output 29 [2018-11-22 22:06:00,046 INFO L478 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 8 treesize of output 1 [2018-11-22 22:06:00,046 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,077 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,193 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-22 22:06:00,312 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:06:00,331 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:06:00,332 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:06:00,348 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:06:00,349 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,355 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:06:00,486 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 6 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-22 22:06:00,486 INFO L202 ElimStorePlain]: Needed 31 recursive calls to eliminate 8 variables, input treesize:147, output treesize:76 [2018-11-22 22:06:00,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:06:00,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2018-11-22 22:06:00,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-22 22:06:00,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-22 22:06:00,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=726, Unknown=19, NotChecked=228, Total=1056 [2018-11-22 22:06:00,613 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 30 states. [2018-11-22 22:06:21,916 WARN L180 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-22 22:06:34,409 WARN L180 SmtUtils]: Spent 6.46 s on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2018-11-22 22:07:06,228 WARN L180 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-11-22 22:07:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:07:36,448 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-11-22 22:07:36,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-22 22:07:36,449 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 40 [2018-11-22 22:07:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:07:36,450 INFO L225 Difference]: With dead ends: 64 [2018-11-22 22:07:36,450 INFO L226 Difference]: Without dead ends: 62 [2018-11-22 22:07:36,451 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=129, Invalid=1123, Unknown=24, NotChecked=284, Total=1560 [2018-11-22 22:07:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-22 22:07:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-11-22 22:07:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-22 22:07:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-22 22:07:36,460 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 40 [2018-11-22 22:07:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:07:36,461 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-22 22:07:36,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-22 22:07:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-22 22:07:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-22 22:07:36,462 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:07:36,462 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-11-22 22:07:36,463 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:07:36,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:07:36,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1613207483, now seen corresponding path program 2 times [2018-11-22 22:07:36,463 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:07:36,463 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 22:07:36,475 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-22 22:07:36,595 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 22:07:36,595 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 22:07:36,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:07:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:07:36,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:07:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:07:36,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:07:36,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-11-22 22:07:36,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-22 22:07:36,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-22 22:07:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-22 22:07:36,784 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 11 states. [2018-11-22 22:07:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:07:36,963 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2018-11-22 22:07:36,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 22:07:36,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2018-11-22 22:07:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:07:36,965 INFO L225 Difference]: With dead ends: 77 [2018-11-22 22:07:36,965 INFO L226 Difference]: Without dead ends: 44 [2018-11-22 22:07:36,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-22 22:07:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-22 22:07:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-22 22:07:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-22 22:07:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-22 22:07:36,969 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 45 [2018-11-22 22:07:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:07:36,969 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-22 22:07:36,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-22 22:07:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-22 22:07:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-22 22:07:36,969 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:07:36,969 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 22:07:36,969 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:07:36,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:07:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2041629940, now seen corresponding path program 1 times [2018-11-22 22:07:36,970 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 22:07:36,970 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 22:07:36,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:07:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:07:37,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:07:37,131 INFO L478 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 [2018-11-22 22:07:37,131 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:07:37,134 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:07:37,134 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-22 22:07:39,151 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 [2018-11-22 22:07:41,166 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-22 22:07:46,181 WARN L180 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-22 22:07:49,669 WARN L180 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-22 22:07:49,674 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:07:49,675 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:07:49,676 INFO L478 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 [2018-11-22 22:07:49,680 INFO L478 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 [2018-11-22 22:07:49,681 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:07:49,687 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:07:49,696 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. [2018-11-22 22:07:49,697 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:27 [2018-11-22 22:07:50,571 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:07:50,582 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:07:50,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:07:50,647 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:55 [2018-11-22 22:07:54,772 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-22 22:07:54,787 INFO L478 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 173 treesize of output 171 [2018-11-22 22:07:54,799 INFO L478 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 171 treesize of output 169 [2018-11-22 22:07:54,799 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:07:54,819 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:07:54,927 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. [2018-11-22 22:07:54,927 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:188, output treesize:184 [2018-11-22 22:08:03,133 WARN L180 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 39 [2018-11-22 22:08:03,243 INFO L303 Elim1Store]: Index analysis took 107 ms [2018-11-22 22:08:03,244 INFO L478 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 [2018-11-22 22:08:03,280 INFO L478 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 [2018-11-22 22:08:03,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:03,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:03,450 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:03,450 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-11-22 22:08:07,762 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-22 22:08:09,161 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 120 DAG size of output: 55 [2018-11-22 22:08:09,197 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,222 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,228 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,236 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,236 INFO L478 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 [2018-11-22 22:08:09,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:09,418 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,597 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,604 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:09,605 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:08:09,605 INFO L303 Elim1Store]: Index analysis took 218 ms [2018-11-22 22:08:09,608 INFO L478 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 176 treesize of output 196 [2018-11-22 22:08:09,957 WARN L180 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-11-22 22:08:09,968 INFO L478 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 111 treesize of output 98 [2018-11-22 22:08:09,982 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 85 [2018-11-22 22:08:10,106 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 83 [2018-11-22 22:08:10,107 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:10,249 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:10,360 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:10,611 INFO L478 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 83 treesize of output 67 [2018-11-22 22:08:10,621 INFO L478 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 26 treesize of output 22 [2018-11-22 22:08:10,622 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:10,763 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:10,808 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:08:10,809 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 59 treesize of output 59 [2018-11-22 22:08:10,809 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:10,870 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,005 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 70 [2018-11-22 22:08:11,037 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 67 [2018-11-22 22:08:11,042 INFO L478 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 [2018-11-22 22:08:11,042 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,073 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,100 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,114 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 64 treesize of output 74 [2018-11-22 22:08:11,138 INFO L478 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 59 treesize of output 67 [2018-11-22 22:08:11,138 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,163 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,267 INFO L478 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 76 treesize of output 72 [2018-11-22 22:08:11,271 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 64 [2018-11-22 22:08:11,271 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,369 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 69 [2018-11-22 22:08:11,370 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-11-22 22:08:11,476 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2018-11-22 22:08:11,476 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,530 INFO L267 ElimStorePlain]: Start of recursive call 15: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:08:11,539 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 61 [2018-11-22 22:08:11,558 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 58 [2018-11-22 22:08:11,562 INFO L478 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 48 treesize of output 40 [2018-11-22 22:08:11,562 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,631 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:11,633 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:11,634 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 64 [2018-11-22 22:08:11,634 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,672 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:08:11,716 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:11,772 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 22:08:11,832 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:11,832 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:376, output treesize:79 [2018-11-22 22:08:13,967 INFO L478 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 [2018-11-22 22:08:13,971 INFO L478 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 [2018-11-22 22:08:13,971 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:13,976 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,007 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. [2018-11-22 22:08:14,007 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:79 [2018-11-22 22:08:14,118 INFO L478 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 80 treesize of output 53 [2018-11-22 22:08:14,123 INFO L478 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 44 treesize of output 35 [2018-11-22 22:08:14,123 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,163 INFO L478 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 40 treesize of output 30 [2018-11-22 22:08:14,164 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,184 INFO L478 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 [2018-11-22 22:08:14,184 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,200 INFO L478 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 [2018-11-22 22:08:14,200 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,210 INFO L478 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 17 treesize of output 4 [2018-11-22 22:08:14,211 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,213 INFO L267 ElimStorePlain]: Start of recursive call 2: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,214 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:14,214 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:80, output treesize:4 [2018-11-22 22:08:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-22 22:08:17,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:08:19,589 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 79 [2018-11-22 22:08:20,031 WARN L180 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-22 22:08:20,673 WARN L180 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-11-22 22:08:21,244 WARN L180 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-22 22:08:21,401 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-11-22 22:08:21,424 INFO L478 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 108 treesize of output 104 [2018-11-22 22:08:21,443 INFO L478 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 104 treesize of output 100 [2018-11-22 22:08:21,443 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:21,465 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:21,541 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:21,553 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:21,585 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:21,585 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:185, output treesize:255 [2018-11-22 22:08:24,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:08:24,997 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb8d6fa2-5d65-448f-badf-92751e4ce82e/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:08:25,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:08:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:08:25,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:08:25,046 INFO L478 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 [2018-11-22 22:08:25,046 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:25,047 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:25,047 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-22 22:08:27,222 WARN L854 $PredicateComparison]: unable to prove that (exists ((dll_create_~head~0.base (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| dll_create_~head~0.base (_ bv1 1))) (= (_ bv0 1) (select |c_old(#valid)| dll_create_~head~0.base)))) is different from true [2018-11-22 22:08:29,239 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:29,245 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:29,245 INFO L478 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 [2018-11-22 22:08:29,250 INFO L478 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 [2018-11-22 22:08:29,251 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:29,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:29,267 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. [2018-11-22 22:08:29,267 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:24 [2018-11-22 22:08:29,473 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:29,480 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:29,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:29,549 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:57, output treesize:63 [2018-11-22 22:08:31,647 INFO L478 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 173 treesize of output 171 [2018-11-22 22:08:31,660 INFO L478 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 171 treesize of output 169 [2018-11-22 22:08:31,660 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:31,687 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:31,800 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. [2018-11-22 22:08:31,801 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:188, output treesize:184 [2018-11-22 22:08:38,034 INFO L478 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 [2018-11-22 22:08:38,045 INFO L478 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 [2018-11-22 22:08:38,045 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:38,086 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:38,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 22:08:38,208 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-11-22 22:08:39,262 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 122 DAG size of output: 57 [2018-11-22 22:08:39,311 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,345 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,363 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,372 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,373 INFO L303 Elim1Store]: Index analysis took 110 ms [2018-11-22 22:08:39,373 INFO L478 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 31 treesize of output 21 [2018-11-22 22:08:39,374 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:39,581 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,822 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,831 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:39,831 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:08:39,832 INFO L303 Elim1Store]: Index analysis took 289 ms [2018-11-22 22:08:39,834 INFO L478 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 176 treesize of output 196 [2018-11-22 22:08:40,305 WARN L180 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-11-22 22:08:40,313 INFO L478 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 111 treesize of output 98 [2018-11-22 22:08:40,325 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 85 [2018-11-22 22:08:40,431 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 83 [2018-11-22 22:08:40,431 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:40,547 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:40,654 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:40,939 INFO L478 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 83 treesize of output 65 [2018-11-22 22:08:40,974 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 22:08:41,017 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 22:08:41,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 61 treesize of output 65 [2018-11-22 22:08:41,018 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:41,085 INFO L478 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 19 treesize of output 11 [2018-11-22 22:08:41,086 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-22 22:08:41,135 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:08:41,273 INFO L478 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 71 [2018-11-22 22:08:41,278 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-11-22 22:08:41,483 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:08:41,484 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_24 input size 13 context size 13 output 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:456) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-11-22 22:08:41,486 INFO L168 Benchmark]: Toolchain (without parser) took 238271.65 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 242.7 MB). Free memory was 944.4 MB in the beginning and 1.0 GB in the end (delta: -93.7 MB). Peak memory consumption was 149.1 MB. Max. memory is 11.5 GB. [2018-11-22 22:08:41,486 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-22 22:08:41,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2018-11-22 22:08:41,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.50 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. [2018-11-22 22:08:41,487 INFO L168 Benchmark]: Boogie Preprocessor took 22.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:08:41,487 INFO L168 Benchmark]: RCFGBuilder took 525.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2018-11-22 22:08:41,487 INFO L168 Benchmark]: TraceAbstraction took 237301.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.4 MB). Peak memory consumption was 157.9 MB. Max. memory is 11.5 GB. [2018-11-22 22:08:41,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 399.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.50 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. * Boogie Preprocessor took 22.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 525.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 237301.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.4 MB). Peak memory consumption was 157.9 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_24 input size 13 context size 13 output size 13 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_24 input size 13 context size 13 output 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...