./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f1b097c6afa8c7725240a0195cb226f841ae6ea .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f1b097c6afa8c7725240a0195cb226f841ae6ea ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:56:15,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:15,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:15,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:15,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:15,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:15,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:15,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:15,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:15,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:15,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:15,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:15,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:15,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:15,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:15,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:15,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:15,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:15,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:15,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:15,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:15,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:15,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:15,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:15,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:15,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:15,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:15,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:15,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:15,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:15,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:15,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:15,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:15,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:15,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:15,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:15,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:15,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:15,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:15,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:15,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:15,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:56:15,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:15,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:15,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:15,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:15,487 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:15,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:15,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:56:15,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:15,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:56:15,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:15,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:56:15,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:56:15,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:56:15,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:56:15,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:15,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:15,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:56:15,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:15,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:15,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:56:15,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:56:15,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:56:15,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:15,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:56:15,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:56:15,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:15,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:56:15,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:56:15,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:15,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-11-29 23:56:15,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:15,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:15,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:15,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:15,839 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:15,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-29 23:56:15,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/d021a25a2/5a275eb3b3b944c582d079e07fa62ba3/FLAG2712ba328 [2020-11-29 23:56:16,508 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:16,508 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-29 23:56:16,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/d021a25a2/5a275eb3b3b944c582d079e07fa62ba3/FLAG2712ba328 [2020-11-29 23:56:16,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/d021a25a2/5a275eb3b3b944c582d079e07fa62ba3 [2020-11-29 23:56:16,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:16,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:16,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:16,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:16,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:16,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:16" (1/1) ... [2020-11-29 23:56:16,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76025e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:16, skipping insertion in model container [2020-11-29 23:56:16,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:16" (1/1) ... [2020-11-29 23:56:16,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:16,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:17,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:17,101 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:17,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:17,161 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:17,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17 WrapperNode [2020-11-29 23:56:17,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:17,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:17,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:17,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:17,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:17,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:17,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:17,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:17,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... [2020-11-29 23:56:17,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:17,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:17,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:17,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:17,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:56:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:56:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:17,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:17,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:17,850 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 23:56:17,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:17 BoogieIcfgContainer [2020-11-29 23:56:17,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:17,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:56:17,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:56:17,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:56:17,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:56:16" (1/3) ... [2020-11-29 23:56:17,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e71bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:17, skipping insertion in model container [2020-11-29 23:56:17,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:17" (2/3) ... [2020-11-29 23:56:17,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e71bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:17, skipping insertion in model container [2020-11-29 23:56:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:17" (3/3) ... [2020-11-29 23:56:17,865 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-11-29 23:56:17,873 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:56:17,876 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 23:56:17,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 23:56:17,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:56:17,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:56:17,918 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:56:17,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:17,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:17,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:56:17,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:17,919 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:56:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 23:56:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:56:17,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:17,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:17,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:17,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 23:56:17,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:17,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134809301] [2020-11-29 23:56:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134809301] [2020-11-29 23:56:18,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:18,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:18,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224150068] [2020-11-29 23:56:18,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:56:18,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:18,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:56:18,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:56:18,184 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 23:56:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:18,206 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 23:56:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:56:18,208 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 23:56:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:18,217 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:56:18,217 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:56:18,222 INFO L677 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 [2020-11-29 23:56:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:56:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 23:56:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 23:56:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 23:56:18,273 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 23:56:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:18,274 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 23:56:18,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:56:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 23:56:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:56:18,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:18,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:18,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:56:18,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 23:56:18,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:18,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216053092] [2020-11-29 23:56:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216053092] [2020-11-29 23:56:18,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:18,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:18,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886760353] [2020-11-29 23:56:18,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:18,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:18,447 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-29 23:56:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:18,600 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 23:56:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:18,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 23:56:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:18,602 INFO L225 Difference]: With dead ends: 54 [2020-11-29 23:56:18,602 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 23:56:18,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 23:56:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-29 23:56:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 23:56:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-29 23:56:18,617 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-29 23:56:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:18,618 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-29 23:56:18,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-29 23:56:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:56:18,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:18,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:18,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:56:18,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 23:56:18,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:18,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111745136] [2020-11-29 23:56:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:18,652 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:18,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107370468] [2020-11-29 23:56:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:56:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111745136] [2020-11-29 23:56:18,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:18,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107370468] [2020-11-29 23:56:18,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:18,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:18,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709267525] [2020-11-29 23:56:18,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:18,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:18,808 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-29 23:56:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:18,931 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-29 23:56:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:18,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 23:56:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:18,933 INFO L225 Difference]: With dead ends: 50 [2020-11-29 23:56:18,933 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 23:56:18,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 23:56:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 23:56:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:56:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-29 23:56:18,942 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-29 23:56:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:18,943 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-29 23:56:18,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-29 23:56:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:56:18,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:18,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:19,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 23:56:19,172 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:19,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:19,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 23:56:19,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:19,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866051985] [2020-11-29 23:56:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:19,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:19,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957021048] [2020-11-29 23:56:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:19,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:56:19,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866051985] [2020-11-29 23:56:19,279 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957021048] [2020-11-29 23:56:19,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:19,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:19,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138614307] [2020-11-29 23:56:19,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:19,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:19,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:19,281 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-29 23:56:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:19,398 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-29 23:56:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:19,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 23:56:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:19,399 INFO L225 Difference]: With dead ends: 47 [2020-11-29 23:56:19,399 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 23:56:19,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 23:56:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-29 23:56:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:56:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-29 23:56:19,406 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-29 23:56:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:19,406 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-29 23:56:19,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-29 23:56:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:56:19,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:19,407 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:19,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:19,633 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-29 23:56:19,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:19,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873549789] [2020-11-29 23:56:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:19,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:19,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148989493] [2020-11-29 23:56:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:19,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:56:19,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:19,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873549789] [2020-11-29 23:56:19,730 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:19,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148989493] [2020-11-29 23:56:19,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:19,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:56:19,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433296269] [2020-11-29 23:56:19,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:19,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:19,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:19,733 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-29 23:56:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:20,060 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-29 23:56:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:20,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 23:56:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:20,062 INFO L225 Difference]: With dead ends: 61 [2020-11-29 23:56:20,062 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 23:56:20,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 23:56:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-29 23:56:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 23:56:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-29 23:56:20,073 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-29 23:56:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:20,073 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-29 23:56:20,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-29 23:56:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:56:20,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:20,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:20,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,275 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:20,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:20,275 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-29 23:56:20,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:20,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341350458] [2020-11-29 23:56:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:20,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:20,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765866710] [2020-11-29 23:56:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:20,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:56:20,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:20,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341350458] [2020-11-29 23:56:20,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:20,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765866710] [2020-11-29 23:56:20,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:20,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:56:20,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107762792] [2020-11-29 23:56:20,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:20,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:20,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:20,383 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-29 23:56:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:20,546 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-29 23:56:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:20,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 23:56:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:20,548 INFO L225 Difference]: With dead ends: 57 [2020-11-29 23:56:20,548 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 23:56:20,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 23:56:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-29 23:56:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 23:56:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-29 23:56:20,556 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-29 23:56:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:20,559 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-29 23:56:20,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-29 23:56:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:56:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:20,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:20,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,762 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-29 23:56:20,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718800321] [2020-11-29 23:56:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:20,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:20,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439437374] [2020-11-29 23:56:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:20,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:56:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:20,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718800321] [2020-11-29 23:56:20,887 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:20,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439437374] [2020-11-29 23:56:20,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:20,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:56:20,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502412725] [2020-11-29 23:56:20,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:20,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:20,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:20,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:20,890 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-29 23:56:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:21,033 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 23:56:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:21,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 23:56:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:21,037 INFO L225 Difference]: With dead ends: 54 [2020-11-29 23:56:21,037 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 23:56:21,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 23:56:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-29 23:56:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 23:56:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-29 23:56:21,044 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-29 23:56:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:21,045 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-29 23:56:21,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-29 23:56:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:56:21,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:21,046 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:21,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 23:56:21,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-29 23:56:21,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:21,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192020674] [2020-11-29 23:56:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:21,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375614268] [2020-11-29 23:56:21,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:21,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:56:21,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:21,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:56:21,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192020674] [2020-11-29 23:56:21,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:21,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375614268] [2020-11-29 23:56:21,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:21,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:56:21,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154050346] [2020-11-29 23:56:21,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:21,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:21,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:21,371 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-29 23:56:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:21,545 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-29 23:56:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:56:21,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 23:56:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:21,547 INFO L225 Difference]: With dead ends: 68 [2020-11-29 23:56:21,547 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 23:56:21,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 23:56:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-29 23:56:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 23:56:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-29 23:56:21,555 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-29 23:56:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:21,556 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-29 23:56:21,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-29 23:56:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 23:56:21,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:21,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:21,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:21,758 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-29 23:56:21,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:21,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397613254] [2020-11-29 23:56:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:21,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:21,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874177159] [2020-11-29 23:56:21,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:21,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:56:21,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 23:56:21,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:21,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397613254] [2020-11-29 23:56:21,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874177159] [2020-11-29 23:56:21,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:21,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:56:21,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014498857] [2020-11-29 23:56:21,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:21,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:21,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:21,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:21,912 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-29 23:56:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:22,101 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-29 23:56:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:22,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 23:56:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:22,102 INFO L225 Difference]: With dead ends: 64 [2020-11-29 23:56:22,103 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 23:56:22,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 23:56:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-11-29 23:56:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 23:56:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-29 23:56:22,110 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-11-29 23:56:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:22,110 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-29 23:56:22,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-29 23:56:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:56:22,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:22,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:22,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:22,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-29 23:56:22,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:22,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289028971] [2020-11-29 23:56:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:22,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:22,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241394704] [2020-11-29 23:56:22,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:22,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:22,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:22,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:56:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:22,457 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:56:22,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:22,514 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:56:22,514 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:24,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 23:56:30,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289028971] [2020-11-29 23:56:30,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:30,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241394704] [2020-11-29 23:56:30,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:30,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:56:30,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661502974] [2020-11-29 23:56:30,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:30,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:30,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:30,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:30,757 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 7 states. [2020-11-29 23:56:31,123 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-29 23:56:41,378 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-29 23:56:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:48,052 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-29 23:56:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:48,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 23:56:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:48,055 INFO L225 Difference]: With dead ends: 54 [2020-11-29 23:56:48,055 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 23:56:48,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:56:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 23:56:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 23:56:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 23:56:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-11-29 23:56:48,067 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 25 [2020-11-29 23:56:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:48,068 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-11-29 23:56:48,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-11-29 23:56:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:56:48,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:48,069 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:48,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 23:56:48,284 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:48,284 INFO L82 PathProgramCache]: Analyzing trace with hash 778492634, now seen corresponding path program 3 times [2020-11-29 23:56:48,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:48,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195035319] [2020-11-29 23:56:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:48,295 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:48,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112524700] [2020-11-29 23:56:48,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:48,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:56:48,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:48,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:56:48,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:48,413 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:56:48,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 23:56:48,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195035319] [2020-11-29 23:56:48,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:48,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112524700] [2020-11-29 23:56:48,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:48,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:56:48,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888147058] [2020-11-29 23:56:48,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:48,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:48,518 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-11-29 23:56:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:48,780 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 23:56:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:48,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-29 23:56:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:48,782 INFO L225 Difference]: With dead ends: 52 [2020-11-29 23:56:48,782 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 23:56:48,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 23:56:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-29 23:56:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 23:56:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-29 23:56:48,790 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 28 [2020-11-29 23:56:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:48,790 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-29 23:56:48,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-29 23:56:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 23:56:48,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:48,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:49,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:49,004 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash 807298301, now seen corresponding path program 3 times [2020-11-29 23:56:49,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:49,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285891185] [2020-11-29 23:56:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:49,012 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:49,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389612822] [2020-11-29 23:56:49,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:49,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 23:56:49,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:49,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 23:56:49,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:49,143 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:56:49,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:49,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:49,571 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 23:56:49,577 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:56:49,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 23:56:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285891185] [2020-11-29 23:56:51,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389612822] [2020-11-29 23:56:51,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:51,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:56:51,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709465699] [2020-11-29 23:56:51,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:51,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:51,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:51,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:51,230 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 7 states. [2020-11-29 23:56:51,548 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 23:57:01,252 WARN L193 SmtUtils]: Spent 7.54 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-29 23:57:02,554 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-11-29 23:57:51,877 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 23:57:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:52,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:52,080 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 52 more [2020-11-29 23:57:52,084 INFO L168 Benchmark]: Toolchain (without parser) took 95223.72 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 62.3 MB in the beginning and 41.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,085 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:52,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.56 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 69.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,086 INFO L168 Benchmark]: Boogie Preprocessor took 47.65 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:52,086 INFO L168 Benchmark]: RCFGBuilder took 595.28 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 52.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,087 INFO L168 Benchmark]: TraceAbstraction took 94227.65 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 41.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.56 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 69.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.65 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 595.28 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 52.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94227.65 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 41.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:57:54,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:54,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:54,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:54,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:54,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:54,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:54,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:54,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:54,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:54,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:54,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:54,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:54,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:54,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:54,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:54,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:54,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:54,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:54,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:54,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:54,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:54,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:54,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:54,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:54,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:54,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:54,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:54,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:54,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:54,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:54,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:54,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:54,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:54,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:54,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:54,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:54,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:54,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:54,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:54,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:54,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:57:54,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:54,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:54,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:54,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:54,850 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:54,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:54,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:54,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:54,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:54,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:54,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:54,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:54,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:57:54,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:57:54,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:54,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:54,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:54,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:54,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:54,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:54,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:54,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:54,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:54,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:54,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:54,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:54,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:57:54,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:57:54,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:54,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:54,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:57:54,858 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-11-29 23:57:55,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:55,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:55,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:55,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:55,364 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:55,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-29 23:57:55,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/33cf9a924/a51588e5464d4908b66384158d7a631d/FLAG633e4ecd9 [2020-11-29 23:57:55,995 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:55,996 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-29 23:57:56,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/33cf9a924/a51588e5464d4908b66384158d7a631d/FLAG633e4ecd9 [2020-11-29 23:57:56,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/data/33cf9a924/a51588e5464d4908b66384158d7a631d [2020-11-29 23:57:56,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:56,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:56,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:56,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:56,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:56,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b989dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56, skipping insertion in model container [2020-11-29 23:57:56,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:56,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:56,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:56,619 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:56,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:56,722 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:56,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56 WrapperNode [2020-11-29 23:57:56,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:56,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:56,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:56,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:56,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:56,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:56,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:56,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:56,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... [2020-11-29 23:57:56,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:56,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:56,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:56,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:56,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:57:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:58,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:58,091 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 23:57:58,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:58 BoogieIcfgContainer [2020-11-29 23:57:58,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:58,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:58,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:58,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:56" (1/3) ... [2020-11-29 23:57:58,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780b5628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:58, skipping insertion in model container [2020-11-29 23:57:58,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:56" (2/3) ... [2020-11-29 23:57:58,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780b5628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:58, skipping insertion in model container [2020-11-29 23:57:58,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:58" (3/3) ... [2020-11-29 23:57:58,105 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-11-29 23:57:58,123 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:58,128 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 23:57:58,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 23:57:58,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:58,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:58,191 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:58,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:58,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:58,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:58,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:58,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 23:57:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:57:58,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:58,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:58,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 23:57:58,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:57:58,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987345745] [2020-11-29 23:57:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 23:57:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:58,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:57:58,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:58,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:57:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:58,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987345745] [2020-11-29 23:57:58,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:58,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:57:58,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961405009] [2020-11-29 23:57:58,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:57:58,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:57:58,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:57:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:58,452 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 23:57:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:58,481 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 23:57:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:57:58,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 23:57:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:58,500 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:57:58,500 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:57:58,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:57:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 23:57:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 23:57:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 23:57:58,557 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 23:57:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:58,558 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 23:57:58,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:57:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 23:57:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:57:58,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:58,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:58,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:57:58,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 23:57:58,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:57:58,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005602852] [2020-11-29 23:57:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 23:57:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:57:58,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:58,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:57:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:59,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005602852] [2020-11-29 23:57:59,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:59,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 23:57:59,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429523344] [2020-11-29 23:57:59,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:57:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:57:59,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:57:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:57:59,018 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2020-11-29 23:57:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:59,871 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 23:57:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:57:59,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-29 23:57:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:59,883 INFO L225 Difference]: With dead ends: 50 [2020-11-29 23:57:59,883 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 23:57:59,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:57:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 23:57:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2020-11-29 23:57:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 23:57:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-29 23:57:59,895 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2020-11-29 23:57:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:59,896 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-29 23:57:59,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:57:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-29 23:57:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:57:59,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:59,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:00,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:58:00,115 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:00,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 23:58:00,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:00,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713121706] [2020-11-29 23:58:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:00,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:58:00,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:00,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:01,405 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 23:58:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:01,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713121706] [2020-11-29 23:58:01,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:01,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 23:58:01,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086248494] [2020-11-29 23:58:01,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:01,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:01,426 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-11-29 23:58:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:03,018 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-11-29 23:58:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:03,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 23:58:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:03,042 INFO L225 Difference]: With dead ends: 46 [2020-11-29 23:58:03,042 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 23:58:03,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 23:58:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-11-29 23:58:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:58:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 23:58:03,058 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 9 [2020-11-29 23:58:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:03,058 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 23:58:03,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 23:58:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:58:03,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:03,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:03,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 23:58:03,264 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:03,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 23:58:03,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:03,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958218449] [2020-11-29 23:58:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:58:03,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:03,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:04,603 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:58:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:04,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958218449] [2020-11-29 23:58:04,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:04,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 23:58:04,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449170518] [2020-11-29 23:58:04,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:04,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:04,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:04,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:04,630 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-11-29 23:58:06,747 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:58:08,245 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 23:58:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:13,534 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-11-29 23:58:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:58:13,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 23:58:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:13,536 INFO L225 Difference]: With dead ends: 60 [2020-11-29 23:58:13,536 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 23:58:13,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 23:58:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-11-29 23:58:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 23:58:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-11-29 23:58:13,554 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 11 [2020-11-29 23:58:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:13,555 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-11-29 23:58:13,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-11-29 23:58:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:58:13,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:13,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 23:58:13,757 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:13,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,757 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-29 23:58:13,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:13,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330213105] [2020-11-29 23:58:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:13,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:58:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:14,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:15,057 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 23:58:16,486 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:58:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:16,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330213105] [2020-11-29 23:58:16,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:16,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 23:58:16,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289593291] [2020-11-29 23:58:16,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:58:16,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:16,511 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 8 states. [2020-11-29 23:58:17,321 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 23:58:18,599 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 23:58:22,276 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:58:23,718 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 23:58:32,413 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:58:41,407 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 23:58:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:43,322 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-11-29 23:58:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:58:43,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-29 23:58:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:43,351 INFO L225 Difference]: With dead ends: 81 [2020-11-29 23:58:43,351 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 23:58:43,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:58:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 23:58:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2020-11-29 23:58:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 23:58:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-29 23:58:43,374 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 16 [2020-11-29 23:58:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:43,374 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-29 23:58:43,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:58:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-29 23:58:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:58:43,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:43,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:43,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 23:58:43,578 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 1 times [2020-11-29 23:58:43,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893138147] [2020-11-29 23:58:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:43,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:58:43,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:44,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:45,456 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:58:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 23:58:47,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893138147] [2020-11-29 23:58:47,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:47,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-11-29 23:58:47,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891477128] [2020-11-29 23:58:47,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:58:47,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:47,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:47,761 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 8 states. [2020-11-29 23:58:50,420 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:58:52,431 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 23:58:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:54,126 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-11-29 23:58:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 23:58:54,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-29 23:58:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:54,143 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:58:54,143 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:58:54,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:58:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:58:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 23:58:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 23:58:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-11-29 23:58:54,161 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 25 [2020-11-29 23:58:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:54,162 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-11-29 23:58:54,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:58:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-11-29 23:58:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 23:58:54,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:54,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:54,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 23:58:54,365 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash -271152046, now seen corresponding path program 2 times [2020-11-29 23:58:54,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:54,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032538997] [2020-11-29 23:58:54,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4775f04e-c19c-4d9c-a49d-4d444fcc4d29/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:54,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:58:54,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:55,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:58:55,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:55,299 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:55,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:55,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:57,608 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 23:58:59,747 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 23:58:59,755 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:59,756 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 23:59:01,961 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 23:59:06,986 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:59:11,335 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:59:16,587 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:59:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:59:16,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032538997] [2020-11-29 23:59:16,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:59:16,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-11-29 23:59:16,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130595385] [2020-11-29 23:59:16,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 23:59:16,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 23:59:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=209, Unknown=3, NotChecked=0, Total=272 [2020-11-29 23:59:16,613 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 17 states. [2020-11-29 23:59:19,100 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-11-29 23:59:20,353 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-11-29 23:59:31,082 WARN L193 SmtUtils]: Spent 8.96 s on a formula simplification that was a NOOP. DAG size: 45 [2020-11-29 23:59:43,674 WARN L193 SmtUtils]: Spent 8.64 s on a formula simplification that was a NOOP. DAG size: 40 [2020-11-29 23:59:54,789 WARN L193 SmtUtils]: Spent 8.99 s on a formula simplification that was a NOOP. DAG size: 44 [2020-11-30 00:00:16,618 WARN L193 SmtUtils]: Spent 4.69 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-30 00:00:33,605 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 00:01:03,487 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 00:01:22,809 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 00:01:45,735 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 00:02:12,452 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-30 00:02:43,082 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 00:02:47,543 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 00:02:52,285 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:02:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:52,288 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-11-30 00:02:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 00:02:52,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-11-30 00:02:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:52,290 INFO L225 Difference]: With dead ends: 93 [2020-11-30 00:02:52,290 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:02:52,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=320, Invalid=772, Unknown=30, NotChecked=0, Total=1122 [2020-11-30 00:02:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:02:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:02:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:02:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:02:52,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-11-30 00:02:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:52,293 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:02:52,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 00:02:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:02:52,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:02:52,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:02:52,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:02:52,656 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-11-30 00:03:21,040 WARN L193 SmtUtils]: Spent 28.16 s on a formula simplification. DAG size of input: 90 DAG size of output: 34 [2020-11-30 00:03:40,954 WARN L193 SmtUtils]: Spent 19.91 s on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2020-11-30 00:03:56,918 WARN L193 SmtUtils]: Spent 15.96 s on a formula simplification. DAG size of input: 101 DAG size of output: 37 [2020-11-30 00:04:06,477 WARN L193 SmtUtils]: Spent 9.56 s on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-11-30 00:04:10,291 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2020-11-30 00:04:21,541 WARN L193 SmtUtils]: Spent 11.25 s on a formula simplification. DAG size of input: 98 DAG size of output: 31 [2020-11-30 00:04:21,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:04:21,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,545 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,545 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv2 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))) [2020-11-30 00:04:21,545 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,547 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv2 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))) [2020-11-30 00:04:21,547 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:04:21,547 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,547 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv2 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))) [2020-11-30 00:04:21,547 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,548 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv2 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))) [2020-11-30 00:04:21,548 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,548 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv2 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))))) [2020-11-30 00:04:21,548 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:21,548 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 00:04:21,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:04:21,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,548 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 00:04:21,549 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:21,555 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 00:04:21,573 INFO L168 Benchmark]: Toolchain (without parser) took 385223.34 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 30.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:21,573 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:21,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.03 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:21,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:21,576 INFO L168 Benchmark]: Boogie Preprocessor took 33.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 36.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:21,576 INFO L168 Benchmark]: RCFGBuilder took 1282.50 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 54.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:21,577 INFO L168 Benchmark]: TraceAbstraction took 383474.48 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 30.8 MB in the end (delta: 22.6 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:21,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.03 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 36.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1282.50 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 54.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 383474.48 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 30.8 MB in the end (delta: 22.6 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...